Internal termination, 4 position, green.
Includes accessories needed to perform calibrations on Honeywell Sensepoint XCD RFD gas sensors (does not include calibration gas).
Includes accessories needed to perform calibrations on the Searchpoint Optima plus gas detector (does not include calibration gas).
Analog digital input converter (4-20mA to Modbus RS-485) for your 301C gas controller.