Description NRF-SK509 Industrial Wireless 4-Channel Switch Control Module The SK509 is an industrial-grade wireless switch control module featuring four input channels and four output control channels with a convenient pairing function. Designed with a streamlined interface and reliable performance, it enables users to replace traditional wired connections with wireless control, significantly reducing installation time and cost. Device parameters can be configured through PC software, UART commands, or a remote controller (model SK509-S). The onboard DIP switches allow rapid adjustment of operating frequency (up to 16 groups) and operation modes to suit different application environments. The NRSK509 is manufactured and tested using a strictly lead-free process, fully complying with RoHS and REACH environmental standards. 2. Features Wireless communication distance of up to 8 km (open environment) Frequency bands: 433 / 470 MHz 16 selectable communication channels High receiver sensitivity: up to –121 dBm Wireless parameter configuration via PC Maximum RF output power: 5 W Supports real-time and scheduled (timing) control modes Wide operating voltage range: 9–30 V GFSK modulation Operating temperature: –40°C to 85°C Automatic antenna matching Product weight: 180 g 3. Applications Remote switch control Wireless telemetry Security and alarm systems Building automation and management Home automation and remote sensing Access control systems
