you can replace external antenna of the receiver or use a high-power transmitter
If you want to buy a 2 buttons long distance 5000 meters waterproof Two-way wireless RF remote control or radio transmitter
The receiver can be used to control DC 12V 24V electric linear actuator
Release button K1 in receiver: Motor stop
Connect the receiver
1 Channel 110V 220V 10A Adjustable Time Delay Remote Control Switch Kit (Model: 0020258) DC12V you can replace external antennaPackage Include: 1 x Receiver: S1DA AC 2 x Transmitter: C 2 1 x User manual Application: It can long range remote control DC or AC equipments, such as lamp, LED lighting, motor, solenoid valve, pump, electric lock, fan, heater, etc. Feature: Wireless control, easy to install. Waterproof: The receiver has waterproof case and waterproof connector, it can be installed outdoors. Universal input: Support 110V AC (100V~120V) used in US, Canada, etc, and