Product Features Stylish and waterproof design, suitable for outdoor use. High-intensity warning lights and high-decibel sirens, intense more warning. Can be used as an alarm host, or a high-power sound and light siren. Powered by solar energy. This product must work with 433MHz Wifi GSM Alarm System , PG105 PG108. Please note!! It can not work alone with the wifi or app. The siren can be used as the alarm host. This outdoor alarm system, When an intruder triggers the sensor/detector, emits a loud and attention-grabbing 100-decibel siren accompanied by a flashing red LED light. It alerts neighbors and passersby in emergencies, effectively deterring potential intruders. VERY IMPORTANT: The Outdoor Alarm does not have motion detection and must be connected to a sensor/detector. Can be connected to wireless sensors and remote controls with a range of up to 30 meters. The outdoor siren deters intruders by sounding a loud and noticeable 100db siren and flashing a red LED strobe light, alerting the neighborhood and passersby in the event of an emergency. IP65 waterproof protection makes the siren weather and heat resistant to withstand harsh environments. — Package includes: Wireless Solar Outdoor Siren ×1, mounting screws, user manual ×1.