1. Support +12V control voltage to achieve remote antenna switching without manual operation, especially suitable for antenna installation in hard-to-reach locations such as roofs and towers. 2. Support 4 antenna inputs, which can be switched to 1 radio device to meet multi-band and multi-directional communication needs and improve communication flexibility. 3. Support 500w continuous power, suitable for high-power mission scenarios such as radio stations and amateur radio. 4. Adopt low-loss technology to maximum signal mission efficiency, reduce power waste and improve communication quality. 5. Adopt materials and precision design to the stability and durability of the equipment under high power and long-term operation. 6. Equipped with SO-239 standard connector, compatible with common coaxial cables, simple and quick installation. Product parameters Number of antenna inputs: 4 Number of outputs: 1 (connected to radio equipment) Frequency range: 1.8-60MHz Impedance: 50 ohm Power: 500W PEP Control voltage: +12V Connector type: SO-239 Dimensions: 10x11.5x3.5CM Colour:Black Material:ABS Package Contents: 1 x AT14 Switcher 1 x Controller KIT Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.