E3SM | E3 POINT W/OUT SENSOR WALL MNT MODBUS 24VAC/DC 1309A0047

24Vac, 24Vdc, Wall Mounted Toxic and Combustible Network (BACnet MS/TP or Modbus) E3 Point Gas Detector with 1 DPDT Relays, RS485 Modbus or BACnet MS/TP master Communication, with Audible Alarm (Sensor Cartridge Sold Seperately)