... 500m to 1000m. 2.go with wireless alarm system,315MHZ/433MHZ/2262 The RF remote controllers ... remote sensing, telemetry, industrial control and wireless security alarm industries. 12VAC, with the rate of firing: 315M ... launch distance: 100 meters open.CE certification wireless Emergency Button for old people use.86 panel boxes, ... combined with the host, with an emergency button alarm function.