Work Principle: Sound Sensor / Voice Induction Lamp: The lamp will light up continuously for approximately 1 minute after being powered, then turn off automatically. Please wait around 15 seconds for the sensing mode to activate.Feature: - Auto PIR motion detection or sound sensor for light on/off - Durable and energy-saving - High sensitivity, bright illumination, and low power consumption - Suitable for corridor, pathway, stair, garden, yard, etc.Specification: - Light Color: White - Connector Type: E27 - Detection Range: 5M - Detection Angle: Approximately 120 degrees - Power: 3W/5W/7W/9W/12W (Sound Sensor) - Voltage: AC 200V240V Operation Instructions: 1. Install the bulb near stairs, preferably with the bulb head facing the exit/entrance. 2. Keep the bulb away from heaters, air conditioners, refrigerators, stoves, or other high-temperature areas, as heat sources may trigger false activation. 3. Do not place shields, furniture, or large objects near the bulb. 4. Avoid pointing the bulb toward windows to prevent interference from external heat or light, which may cause unintended activation. 5. Do not install the bulb near gates or airways where movement or airflow could trigger the sensor.Troubleshooting: 1. After installation, the bulb may turn on and off automatically. This could be due to nearby animal movement, incorrect installation angle, or placement near a heat source. 2. If the bulb turns on every 8 seconds and off every 30 seconds repeatedly, check for people or animals nearby. Alternatively, test the bulb in another room to confirm proper operation.