"Xintex 2 Channel Propane Detector - Square Bezel - Plug In Sensor Brand New Includes Manufacturer's Warranty, Product # S-2A-NV The Fireboy-Xintex S-2A-NV is a propane/CNG monitor and controller which includes low current draw, plug-in sensors, display module fault light/alarm and fault light/alarm to indicate a malfunction in either one of the sensors
"The S-2A-NV propane monitor/controller features include low current draw, plug-in sensors (second sensor optional), display module fault light/alarm to indicate a malfunction in either one of the sensors. (Fault indicators show that the module or sensors are not working and may need repair). Solenoid valve not included. Features: A microprocessor-controlled two-channel monitor with automatic solenoid valve on/off switch. A ""press to test"" button for each channel confirms function. Module size: 4-3/4"" x 3-3/4"" x 7/8"" Available in black. Blower Relay = NONE , Fume Type = NONE , Generator Shutdown = NONE , Sensors Included = NONE , Voltage - Input Range (Volts) = NONE"