YASONG SLA-B02B 120dB Rechargeable Alarm Siren, 25W, 12 Tones, 5000mAh Battery, LED Strobe, IP65 Hand Crank Alarm Siren This model uses 4 AA

This model uses 4 AA batteries and a magnetic base

This model uses a 5000mAh lithium battery and can be charged by AC100–240V power

schools and outdoor warning points

The big remote turns the alarm on or off

emergency rescue areas and outdoor warning points

YASONG SLA-B02B 120dB Rechargeable Alarm Siren, 25W, 12 Tones, 5000mAh Battery, LED Strobe, IP65 Hand Crank Alarm Siren This model uses 4 AAThe YASONG SLA B02B rechargeable alarm siren combines a 120dB loud horn, 5000mAh lithium battery and LED strobe warning light for warehouses, homes, businesses, factories, mines, schools, ports and outdoor emergency security areas. This model uses a built in rechargeable battery that can provide up to 8 hours of working time when fully charged. The included remote control adjusts the volume and switches tones within a short operating range. 120dB loud