YASONG SLA-05BK 130dB Dry Contact Trigger Alarm Siren, 45W, 12 Tones, IP65, USB Upload, LED Strobe Wireless Remote Control & Trigger Alarms The YASONG SLA-900MY-2000 is a

The YASONG SLA-900MY-2000 is a high-power wireless remote control alarm siren with a 0–130dB adjustable loud horn

DC and AC voltage options including DC12V

5000mAh lithium battery with about 8 hours of working time

school buses

YASONG SLA-05BK 130dB Dry Contact Trigger Alarm Siren, 45W, 12 Tones, IP65, USB Upload, LED Strobe Wireless Remote Control & Trigger Alarms The YASONG SLA-900MY-2000 is aThe YASONG SLA 05BK dry contact trigger alarm siren combines a 0130dB adjustable horn, 45W alarm power and LED strobe warning light for sensors, motion detectors, entry access control systems, relays, control panels and outdoor industrial security areas. This model works by dry contact signal activation: when an external device sends a voltage free switch signal, the siren triggers both sound and light warning. It supports multiple voltage options and