YASONG SLA-01T1 120dB Timer Alarm Siren, 45W, 12 Tones, IP65, USB Upload, LED Strobe, Wall Mount Product Size:19.4×16.2×30.3cm and this model does not

and this model does not include sound

and the plug may also be removed for hardwired installation

This model uses a DC10V–30V wired power input

docks and outdoor security warning areas

and a built-in lithium battery for temporary outdoor warning use

YASONG SLA-01T1 120dB Timer Alarm Siren, 45W, 12 Tones, IP65, USB Upload, LED Strobe, Wall Mount Product Size:19.4×16.2×30.3cm and this model does notThe YASONG SLA 01T1 timer alarm siren combines a 0120dB adjustable horn, 45W alarm power and LED strobe warning light for factories, workshops, schools, public facilities, buildings, oil fields and chemical plants. This model includes an intelligent timing function, allowing users to set operating times so the alarm activates only when needed. It supports multiple voltage options and requires wiring before use. 0120dB adjustable sound for different