Greystone CMD5B4 & 5 Series carbon monoxide detector uses an electrochemical sensor to monitor the carbon monoxide level and outputs a field-selectable 4-20 mA or voltage signal. The voltage signal may be set to 0-5 or 0-10 Vdc. The sensing range and output may be scaled to either 100, 150, 300, 400 or 500 ppm via the onboard menu. A front-panel LCD is standard to ensure easy setup and operation. It is available in either wall/surface or duct mount configurations.
Other standard features include a backlight for the LCD, a front panel test switch, status indication, and an alarm buzzer. The test function may also be controlled remotely with a digital input signal. The on-board menu allows the local configuration of all device parameters. Optional features include one or two alarm relays and/or RS-485 network communication configured for either Modbus or BACnet protocol.