YASONG SLA-01HK 120dB Signal Triggered Alarm Siren, 25W, IP65, Dry/Wet Contact, USB Upload, LED Strobe Warning Beacons Light This model works by RS-485

This model works by RS-485 command activation: after power is connected

and this model does not include sound

IP65 protection for outdoor use

IP66 waterproof and dustproof housing for outdoor and industrial use

battery specification and installation position before use

YASONG SLA-01HK 120dB Signal Triggered Alarm Siren, 25W, IP65, Dry/Wet Contact, USB Upload, LED Strobe Warning Beacons Light This model works by RS-485The YASONG SLA 01HK signal triggered alarm siren combines a 0120dB adjustable horn with a LED strobe warning light for industrial sensor linkage, PLC systems and security alarm setups. This model works by external signal triggering: it accepts either passive signal dry contact or active signal wet contact input, then activates audible and visual warning after receiving the switch signal. Passive or active signal input for different control systems