Product Description
The Q4C-II is a multi-channel controller and alarm unit that can connect with up to four remote transmitter/sensors to measure various toxic gases. It uses RS-485 communication in a 4-wire daisy chain setup to lower installation costs. Alarm setpoints can be configured via the front keypad or software. It features multiple relay configurations, three buzzer settings, and 24 VDC outputs for a horn and strobe. The controller includes a USB port for PC software access and an additional RS-485 port that can be set for Modbus RTU or BACnet/IP protocols. It comes with a back-lit display, keypad, software, and interface cable.