EC 36 Single Point Gas Monitor The EC 36 is designed to detect the release of toxic gases in atmospheres such as wastewater treatment facilities, parking garages, gas and chemical storage areas, and laboratories. It comes standard with non-intrusive auto calibration, digital display, adjustable on-board relays and 4-20 mA output. The unit operates from either 110V AC or 12-24V DC and can be mounted anywhere. The EC 36 can be operated independently or can easily be integrated into existing systems via the 4-20 mA signal.