YASONG SLA-01HX 120dB RS-485 Modbus Alarm Siren, 25W, 12 Tones, IP65, USB Upload, LED Strobe Voltage:DC24V 31 mile in open areas

31 mile in open areas without wall obstruction

and the blinking mode is not adjustable

and 6 different emergency tones for public safety and site warning use

shipyards and steel plants

Portable rechargeable design for movable warning use

YASONG SLA-01HX 120dB RS-485 Modbus Alarm Siren, 25W, 12 Tones, IP65, USB Upload, LED Strobe Voltage:DC24V 31 mile in open areasThe YASONG SLA 01HX RS 485 Modbus alarm siren combines a 0120dB adjustable horn, RS 485 Modbus RTU protocol control and LED strobe warning light for warehouses, factories, workshops, corporate buildings, industrial sites and networked warning systems. This model works by RS 485 command activation: after power is connected, the alarm stays in standby mode and can be triggered by control software sending Modbus RTU commands. RS 485 Modbus RTU control