Single-channel receiver with a 1.8-inch, 3-digit display and a 32-segment, three-colour bar graph. Includes a 24 V / 600 mAh backup battery, three-stage alarms, trouble indication and relay outputs. Wall-mounted design with self-diagnostics and warning-light compatibility. Accepts 4–20 mA detector inputs, provides 4–20 mA output and offers optional isolated RS-485 Modbus communication. Dimensions: 235.6 × 355.5 × 117.3 mm; weight: 2.1 kg.