Explosion-proof, wall-mounted single-channel receiver with a 4-digit display and a 32-segment, three-colour bar graph. Includes three-stage alarms, trouble indication, relay outputs and self-diagnostics. Accepts 4–20 mA detector inputs and provides 4–20 mA output, with optional isolated RS-485 Modbus communication. Alarm levels and delay settings are programmable. Dimensions: 290 × 335 × 161 mm; weight: 12 kg.