SEM300 | Alarm Relay



SEM300-VT/SEM300-PS’s System Enhancement Module (SEM) is a communicator that can get your compatible Honeywell Vista or DSC PowerSeries panel to communicate through the 4G LTE cell network (Ethernet is optional for a dual-path setup). Can enable the ability to use the app and web services to monitor and control the system, view logs, and control automation. *Requires an additional monitoring subscription to fully function*

Key features:

  • Choose from either AT&T or Verizon
  • Internal Antennas
  • External LEDs for visual feedback
  • Optional Ethernet adapter for dual-path connection
  • Supports Z-Wave and Z-Wave Plus devices

Power Requirements: 12 V nominal, 125 mA nominal, 230 mA
Cellular Network: 4G LTE with 3G HSPA, 3G GSM fallback
Panel Interfaces: Two keypad BUS connections, 12V
Enclosure Indicators: Five LEDs (red, green, yellow, or blue)
Operating Temperature: 14 to 131°F (-10 to 55°C)
Storage Temperature: -30 to 140°F (-34.4 to 60°C)
Humidity: 90% relative humidity non-condensing
Enclosure Dimensions: 7.66 x 4.35 x 1.65 in.
Enclosure Color: White
Case Material: Fire-retardant PC/ABS, PC


Honeywell Vista Series, DSC Power Series

Service Provider

Verizon, AT&T

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