Item Type: Automatic Telegraph Key <br>Material: PCB <br>Voltage: DC5V <br>Output Interface: 3.5mm Interface <br>Working Environment: -40℃ to 85℃1、TOUCH SENSITIVE: Auto telegraph key is touch type, standard 3.5mm output interface, stable performance and less interference. <br>2、2 LAYER DESIGN: The upper layer is the main circuit and interface of telegraph key, and the lower layer is the magnet fixed base with solid structure. <br>3、EASY TO OPERATE: Users can realize all functions of CW automatic shooting with two fingers touching the ball, which is convenient and reliable. <br>4、PCB CIRCUIT: Telegraph key is printed with PCB circuit, rust resistant, good stability and convenient for outdoor use. <br>5、WIDE APPLICATION: The key can be easily attached to iron objects such as radio shells and car hoods without moving, so it has a wide range of applications.1 x <br> <br>Automatic&nbsp;Telegraph&nbsp;Key