BTI; BTI-MDM w/ modem
Supervisory Interface Devices
BTI and BTI-MDM
Date Last Saved: 6/7/2005 4:43:25 PM
Product Name(s):
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BTI; BTI-MDM w/ modem
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Product Description:
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The Alerton BTI is a programmable supervisory interface and multi-port BACnet compliant router. The BTI can support up to 256 Alerton secondary control units (VisualLogic Controllers also known as VLCs) on four MS/TP networks. The BTI communicates using BACnet/IP or alternately using BACnet/EtherTI can also communicate with 3rd-party BACnet-compliant devices. Tnet. When communicating using BACnet/IP the BTI can act as a BACnet Broadcast Management Device (BBMD) and communicate with up to 31 other BBMDs.
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Product Application(s):
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The BTI communicates with all connected VLCs to update information and share points, and then coordinates building-wide control and energy management functions via commands to these secondary control units (VLCs). The BTI has the capacity to execute pre-programmed and custom routines for global building control and energy management functions.
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Point Quantity
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Characteristics
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Analog Input (AI):
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N.A.
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N.A.
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Digital Input (DI):
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N.A.
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N.A.
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Universal Input (AI or DI):
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N.A.
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N.A.
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Analog Output (AO):
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N.A.
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N.A.
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Digital Output (DO):
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N.A.
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N.A.
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Universal Output (UO):
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N.A.
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N.A.
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Other:
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N.A.
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N.A.
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A/D Converter Resolution
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D/A Converter Resolution
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HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
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Indicating status LED on each output?
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Integral Flow Sensor?
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N.A.
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Integral Damper Actuator?
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N.A.
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Can controller accept occupant override from thermostat?
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N.A.
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Can controller accept occupancy sensor input?
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N.A.
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Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
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(1) - BACnet/IP or BACnet/Ethernet port to primary network @ 10/100 Mbps (4) - BACnet MS/TP ports to secondary network @ 9.6 - 76.8 kbps (polling; alternate use) (1) - BACnet port to PTP (9.6 - 115.2 kbps)
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External Communication Ports, Speeds and Access Devices
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(1) - EIA-232 port using BACnet/PTP @ 57.6 kbps; To: Laptop/PC for device configuration (Alerton AC-2650 cable required) (1) - Modem port
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Additional Information (Optional)
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Network Accessing Capabilities via Controller
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Controller Access Devices
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Zone-Based Interface Access
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N.A.
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Zone Interface Hardware
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*Note: This section covers the capabilities for accessing the controller or other parts of the network from the controller (i.e.
'bottom-up').
Standard access functionality is covered in the Architecture and Software sections.
**Does NOT include front-end OI functions. See vendor for specific functions available.
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Microprocessor(s)
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Motorola 32-bit Power PC CPU
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Clock Type
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Clock Synchronization
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Synched up via standard BACnet Time_Synchronization message by OWS, or by any device which can transmit standard BACnet Time_Synch.
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Volatile Memory (RAM) Capacity
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32 MB DRAM
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Volatile Memory (RAM) Uses
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Is Volatile Memory Supported By Battery?
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Yes - external battery provides power conditioning and noise filtering for ongoing operational data integrity and internal battery
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Battery Type(s)
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Battery Type(s) External 12v gel-cell and internal replaceable 3v lithium coin-cell
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Battery Life
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External 12v gel-cell is continuously charged and replacement is recommended every two years. Internal 3v lithium coin-cell has a standby life of ten years.
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Backup Battery Operating Time
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External 12v gel-cell provides up to five minutes of powerless operation for orderly shutdown and data backup. Internal 3v lithium coin-cell provides up to 1.5 years cumulative real-time clock without AC or battery power.
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Non-Volatile Memory Capacity (EEPROM/Flash)*
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128K SRAM 16MB CompactFlash 64K Flash ROM
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Non-Volatile Memory Uses
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Additional Information
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Items in NV memory are not lost upon power or battery failure. Other types of NV memory such as EPROM, NOVROM, etc. do not directly impact system performance.
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* Items in NV memory are not lost upon power or battery failure. Other types of NV memory such as EPROM, NOVROM, etc. do not directly
impact system performance.
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Can trend data be stored in this controller?
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Yes
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How many total trend values can be stored?
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Up to 1000 trendlogs can be stored consisting of 1 point per log and 256 samples per point (for a total of 256,000 stored samples per controller)
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What is the controllers role in trending?
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Programming resident within the BTI gathers and stores trend data on-board. At set intervals, data is sent by the BTI to a workstation for archival.
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Can controller be programmed to 'push' data to archive or are trends 'pulled' from controller?
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When full, does controller automatically send up trend data, overwrite data, or stop logging data?
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If controller trend data buffer fills before being called by archive workstation, old data is overwritten.
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Programming Method(s)
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N.A.
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Resident vs Non-Resident Program Execution
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N.A.
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Scheduling
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Resident Energy Management
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Specific Pre-Programmed Algorithms Available
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Additional Programming Functions
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N.A.
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DDC Loops (P, PI, PID)
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N.A.
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Automatic PID Tuning Feature
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N.A.
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Automatical-Dial Alarm Support
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N.A.
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Does controller perform multiple retries and buffer/store alarm until connection is made?
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N.A.
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Are multiple destinations possible?
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N.A.
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Upon controller power loss or hardware failure:
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Are network communications affected?
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N.A.
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Is loss recognized on/by the network and alarm reported?
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N.A.
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DO and AO response?
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Volatile memory functions?
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Upon restoration of power does the controller:
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Auto-reboot without operator intervention?
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N.A.
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Automatically reset/synchronize the clock?
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N.A.
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Update all monitored functions?
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N.A.
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Generate an alarm if backup battery is dead?
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N.A.
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Upon network or communications failure does controller:
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Continue to operate standalone?
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N.A.
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Operate with last global settings or user-specified value?
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N.A.
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Do broken network segments continue to communicate within the remaining segment?
(Note: May depend on proper termination of segments for higher speed networks.)
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N.A.
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Does network automatically reconfigure upon restoration?
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N.A.
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Does network store 'loss of communications' alarm with time of event?
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N.A.
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Additional Information (optional)
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N.A.
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Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
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Processor failure?
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N.A.
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Internal hardware failure?
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N.A.
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Open/shortened sensor?
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N.A.
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Others?
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N.A.
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Control Enclosure
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N.A.
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Power Supply Required
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Voltage
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24 Vac
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VA
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(10 VA)
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Surge Protection
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Provided - Surge and lightning protection provided as standard feature. External 12v gel-cell battery provides additional power conditioning and noise filtering.
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Underwriters Laboratories
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UL 916 PAZX (Energy Management)
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FCC
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Part 15, Sub-Part J, Class A
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CE
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EMC Directive 89/336/EEC (European CE Mark)
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LonMark Certified
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BACnet (BTL) Certified
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Other
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Programming Method(s)
(See also 'Software' Form)
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Alerton VisualLogic graphical programming. Optional menu-based set-up/configuration can be performed
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Scheduling
(See also 'Software' Form)
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Resident/Supervisory. This controller supervises the scheduling of other controllers. Up to 250 weekly schedules, 250 holiday schedules, and 250 event schedules can be stored in the BTI.
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Energy Management
SI-resident energy management functions/algorithms calculated and performed
by this SI. One or more of these choices may be selected. 'No' indicates that it
is not available.
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Specific, pre-programmed algorithms available.
'No' indicates that it is not available.
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Hardware I/O Points
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Additional SI Functions
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Automatic-Dial Alarm Support
(See also 'Software' Form)
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The BTI-MDM provides autodial alarm support.
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Does SI perform multiple retries and buffer/store alarm until connection is
made?
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Yes
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Are multiple destinations possible?
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Yes
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Upon SI power loss or hardware failure:
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Is loss recognized on/by the network and alarm reported?
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Yes
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Upon restoration of power does the SI:
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Auto-reboot without operator intervention?
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Yes
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Automatically reset/synchronize its clock?
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No
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Automatically reset/synchronize its secondary network?
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Yes
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Update all monitored functions?
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Yes
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Generate an alarm if backup battery is dead?
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No
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Control Enclosure
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Provided - cover completely encloses unit with access wings for wiring terminations and network/port connections.
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