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Product Codes
FCS-8-M Modbus® RTU RS-485 WAN Output FCS-8 Eight Channel Controller
FCS-8-B BACnet® MS/TP RS-485 WAN Output FCS-8 Eight Channel Controller 
Factory Options
-AI  Four internal Analog Inputs 4-20 mA
-2AI
  Eight internal Analog Inputs 4-20 mA
-AO  Four internal Analog Outputs 4-20 mA
-2AO  Eight internal Analog Outputs 4-20 mA
-AIAO  Four internal Analog Inputs 4-20 mA and four internal Analog Outputs 4-20 mA
-DL  Enclosure door lock and keys to prevent unauthorized access to inside the enclosure
-IH  Internal heater for cold environment applications down to -40°C / 40°F
-L  Top mounted strobe, red lens, IP65 rated, 6.1 cm dia x 13 cm H / 2.4 in dia x 5.2 in H)
-SW  Manual shutoff switch (for emergency electrical shutdown, ventilation purge and to meet B52 code requirements)
-WA  Door mounted, water tight audible alarm, rated 85 dB @ 60.96 cm / 2 ft 
Field Options
FCS-OPTION AO Analog Output board for adding four internal 4-20 mA analog outputs to the FCS-8, install in the field by qualified technician only or send back to factory for installation
FCS-OPTION AI Analog Input board for adding four internal 4-20 mA analog inputs to the FCS-8, install in the field by qualified technician only or send back to factory for installation
CET-BAC-MOD CETCI BACnet Module for converting FCS-8-M WAN communication from Modbus® to BACnet®, installed in the field by qualified technician only 
Compatible Analog (4-20 mA) Transmitters (requires factory installed -AI or -2AI Option)
LPT Series Single channel analog gas detector for monitoring carbon monoxide, nitrogen dioxide, ammonia, chlorine, ozone or oxygen
LPT-A series Single channel analog gas detectors for monitoring many different toxic, combustible or refrigerant gases
ART series Single channel analog infrared refrigerant gas detectors with 0 - 3,500 ppm range
CGAS Detectors series Single channel analog infrared CO2 gas detectors with 0 - 5000 ppm or 0 - 5% vol measurement range
CXT-A series Single channel, analog explosion proof gas detectors for monitoring toxic or combustible gases in hazardous-rated areas 
Compatible Digital (Modbus® RS-485) Transmitters
ART series Single channel Modbus® infrared refrigerant gas detectors with 0 - 3,500 ppm range
CGAS Detector series Dual channel digital gas detectors for monitoring many different toxic, combustible or refrigerant gases
LPT-P series 3 channel, digital gas detectors for monitoring CO, NO2 and combustible gases
LPT-M series 3 channel, digital gas detectors for monitoring many different toxic, combustible or refrigerant gases
CXT-D series Single channel, digital explosion proof gas detectors for monitoring toxic or combustible gases in hazardous-rated areas 
Peripheral Devices
LNK-AI (max 2, no internal AI) Analog Input Peripheral Device that adds four 4-20 mA inputs, Modbus® RS-485 communication
LNK-AO (max 2, no internal AO) Analog Output Peripheral Device that adds four 4-20 mA outputs, Modbus® RS-485 communication
LNK-XT Network Extender Peripheral Device to extend the Modbus® RS-485 BUS wire length
QCC-RDM (max 4) Remote Display for alternate location viewing of gas level readings
RLY-4 (max 2, no RLY-8) Remote Relay that adds four relay outputs, rated 5A @ 240 volts each, Modbus® RS-485 communication
RLY-8 (max 1, no RLY-4) Remote Relay that adds eight relay outputs, rated 5A @ 240 volts each, Modbus® RS-485 communication
RPS-24VDC Remote Power Supply to provide power to extend the network of remote and peripheral devices
RSA-24V Remote LED strobe light with audible, red lens, 8.9 cm / 3.5”, comes with mounting bracket
RSH-24V-A Remote Horn/Strobe Combo, unmounted, 24 VAC/VDC, rated 99 dB @ 3 m (10 ft) (VAC), 97 dB @ 3 m (10 ft) (VDC), amber lens
RSH-24V-B Remote Horn/Strobe Combo, unmounted, 24 VAC/VDC, rated 99 dB @ 3 m (10 ft) (VAC), 97 dB @ 3 m (10 ft) (VDC), blue lens
 RSH-24V-R
 Remote Horn/Strobe Combo, unmounted, 24 VAC/VDC, rated 99 dB @ 3 m (10 ft) (VAC), 97 dB @ 3 m (10 ft) (VDC), red lens
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