One pair (red & black), with 0.16in (4mm) banana-style spring contacts and nickel-plated brass ends.
Available as O2, CO, H2S, H2, NO2 & flammable catalytic bead.
Includes accessories needed to perform calibrations on the Searchpoint Optima plus gas detector (does not include calibration gas).
Flexible conduit in 21 or 27 inch lengths.
Analog digital input converter (4-20mA to Modbus RS-485) for your 301C gas controller.