This document introduces the HP-308-1 human body induction module, including the instructions for use, typical applications, schematic diagrams, sensing range, and technical specifications. The module is based on infrared technology and is characterized by high sensitivity and reliability. It is widely used in various automatic sensing electrical devices. It features full automatic sensing, two triggering modes, and sensing blocking time. The module operates at a voltage of DC12V and has low power consumption. It uses a dual-element probe and a circular lens, with a sensing range of 3-5 meters. The lens size is 12.7mm. The module is suitable for operating environments with temperatures ranging from -20°C to +70°C.
The HP-308-1 is an infrared‑based human body induction module with a relay output. It automatically detects a person entering its sensing zone and closes the relay contact to supply power, then releases after a programmable delay.
The manual describes two trigger modes (non‑repetitive L and repetitive H), adjustable delay and lock‑out times, wiring connections, installation tips, and environmental limits. Technical parameters such as operating voltage, static current, sensing range, and dimensions are also provided. This manual is written in Chinese.
| Operating voltage | DC12V (customizable) |
|---|---|
| Static current | <50 µA |
| Relay contact rating | ≤10 A |
| Delay time | 0.1 s – tens of minutes (customizable) |
| Lock‑out time | 0.1 s – tens of seconds (customizable) |
| Sensing angle | <140° |
| Sensing distance | 3–5 m (up to >8 m with lens) |
| Lens diameter | 12.7 mm (default, 8 mm or 22.5 mm optional) |
| Operating temperature | -20 °C to +70 °C |
| Physical dimensions | 75.5 mm × 15 mm, 6 mounting holes |
It uses infrared technology; when a person enters the detection range, the module’s relay contacts close to supply power, and they open again after the delay period.
The default voltage is DC12 V, but other voltages such as 5 V, 6 V, 9 V, or 24 V can be ordered.
After power is applied, the module initializes for about one minute, during which it may operate 0–3 times before entering standby.