Help CenterIf the Gen 2 PIR Motion sensor is triggering the Gen 2 siren by itself with no body actively moving in front of the motion sensor or any pets that may set it off, but this is occuring by itself please see this article:
Additional information to check:
A wireless PIR (Passive Infrared) motion sensor might alarm by itself due to several potential causes:
1. **Environmental Factors**:
- **Heat Sources**: Objects like heaters, radiators, or even sunlight can emit infrared radiation, triggering the sensor.
- **Drafts**: Air from heating or cooling systems, or even open windows, can cause rapid temperature changes that the sensor might detect as motion.
2. **Electrical Interference**:
- **RF Interference**: Other wireless devices operating on similar frequencies can interfere with the sensor’s signal.
- **Power Fluctuations**: Inconsistent power supply or low battery levels can cause the sensor to malfunction.
3. **Physical Obstructions**:
- **Moving Objects**: Curtains, plants, or other objects that can move due to wind or air currents.
- **Vibrations**: Nearby vibrations from heavy machinery or traffic can cause the sensor to trigger.
4. **Sensor Issues**:
- **Dust or Dirt**: Accumulation on the sensor lens can cause false alarms.
- **Faulty Hardware**: Defective components within the sensor can lead to malfunction.
- **Improper Installation**: Incorrect mounting angles or locations can cause the sensor to misinterpret normal conditions as motion.
5. Typical Motion Sensor Settings
6. **Interference from Electronic Devices**:
- **Microwave Ovens, Wi-Fi Routers**: Devices emitting electromagnetic radiation can interfere with the sensor's operation.
Addressing these issues involves:
- Ensuring the sensor is installed in a stable environment, away from heat sources and drafts.
- Checking for and mitigating any potential sources of RF interference.
- Replacing batteries regularly and ensuring consistent power supply.
PIR Motion sensor has a tamper switch.
Typical setting for the Motion sensor, this will allow people to walk around inside during the evening when the alarm is set to 'Home'
The Motion sensor cover, the red circle is the piece that rests against the tamper switch.
Motion sensor tamper switch
