Instruction manual for the Hong Run NHR-5810 series eight‑channel flash alarm, covering features, wiring, operation and RS485 Modbus communication.
The NHR-5810 series flash alarm is a contact‑type sound‑light indicator designed for high reliability and low power consumption. It can monitor eight input channels, display high‑brightness numeric indicators, and provide audible, visual and relay outputs. The device supports both open‑circuit/closed‑circuit contact alarms and TTL‑level alarms, with optional memory function.
The manual describes the front‑panel layout, wiring diagrams, operation modes, and configuration procedures. It also details the RS485 communication interface using the standard Modbus RTU protocol, allowing integration with supervisory systems for remote monitoring and control. This manual is written in Chinese.
| Input channels | 8 (active TTL or passive contact) |
|---|---|
| Relay output capacity | AC 220 V / 3 A, DC 24 V / 2 A |
| Power supply | AC 100‑240 V (50/60 Hz), DC 24 V (±10 %) |
| Operating temperature | 0 °C – 50 °C |
| Relative humidity | 10 % – 90 % RH |
Press the “试验” (test) key; all eight indicators flash and the buzzer sounds intermittently.
It supports an RS485 interface using the standard Modbus RTU protocol.
The alarm can monitor eight input channels at the same time.