The family of R8471 single channel controllers continuously monitor the analog 4 to 20 mA signal output from any Det-Tronics gas detector. Each R8471 controller provides at-a-glance visual indication from high visibility bar-graph and digital readout LED displays, high intensity alarm LEDs, and optional alarm relays. A variety of mounting racks and cages are available. Be sure to inquire about our special controller package for multi-point gas system cost-savings!