DC 12V-72V Wireless Remote Control Relay Switch 40A 328ft IP65 Waterproof RF
(Note:max load:30A). IP65 Level waterproof, thus use safely even in damp places. You can try to straighten the receiver or remote antenna to increase the remote distance. Strong Signal-Strong RF signal works through walls and doors without any interference; Max range is up to 324ft with no obstacle.