The KWJ 316/310 Carbon Monoxide (CO) Monitor and Alarm is a 115 VAC dust-resistant instrument that can be surface mounted as closely as possible to the air supply, but outside a classified hazardous area. It continuously monitors a compressed air sample and gives an alarm when CO in the sample exceeds a preset level. It indicates CO concentration in ppm on a digital display, and has a pilot light to verify the instrument is on and operating properly. It has an internal alarm relay and terminals for a 4-20mA signal. Contact us to request full specifications and pricing.