Use with the host, the best effect Wireless siren outdoor waterproof flash siren sound flash siren siren for RF 433MHz host home security alarm system with backup battery Features 1. Can match 20 wireless remote controllers; 60 wireless detectors 2. The sound pressure of the alarm can reach 130 decibels 3. The alarm has a tamper alarm function 4. The alarm has both sound and a quick flashing prompt. 5. Wireless learning code: adding new accessories is convenient, safe and efficient 6. One-button control: remote control for out armed, remote control for home armed, remote control for emergency call alarm, remote control for quick disarm 7. Built-in AAA NI-HM rechargeable battery pack 8. Comply with CE safety standards Wireless sound and light outdoor siren Can connect to all 433MHz (433.92MHz) hosts Wireless sound and light outdoor siren CW31 CW31 can be used as an on-site alarm. You can add wireless accessories to the CW31, such as remote control, wireless magnetic door contact, wireless PIR detector, wireless smoke detector, wireless gas detector. In the arming status, when the detector is triggered, CW31 will alarm with sound and flash light.J008 is widely used in banks, hospitals, power stations, schools, factories, shops and so on, to protect the personnel and property security. Installation: Mainly installed under indoor/outdoor eaves to warn neighbors and threaten intruders when an alarm occurs;" Other detectors send signals to the host, and the host transmits to the sound and light siren, prompting neighbors and threatening intruders immediately Wireless Alarm Outdoor Waterproof Flash Siren Sound Flash Alarm Siren For Tuya GSM Home Security Alarm System Backup Battery 433MHz Contains backup battery, if danger occurs, power failure can also alarm It can be installed indoors and outdoors, completely waterproof Product properties "1. Power DC: 110~230VAC (input) 12V / 1. 0A (output) 2. Quiescent current: 200uA; 3. Alarm current: 500mA; 4. Receiving distance: 200m-300M (open distance); 5. Support receiving frequency: 433.92MHz; 6. Siren volume: 130dB; 7. Flashing frequency: 60 times/minute (maximum value); 8. Wired transmission: support; Include Wireless sound and light siren Manual Fixing screw