Welcome to our store！</br> 1、TOUCH SENSITIVE: Auto telegraph key is touch type, standard 3.5mm output interface, stable performance and less interference. 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. 3、EASY TO OPERATE: Users can realize all functions of CW automatic shooting with two fingers touching the ball, which is convenient and reliable. 4、PCB CIRCUIT: Telegraph key is printed with PCB circuit, rust resistant, good stability and convenient for outdoor use. 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. <p class="wang-edit-text"><p class="wang-edit-text"><p class="wang-edit-text"> Item Type:&nbsp;Automatic&nbsp;Telegraph&nbsp;Key Material: PCB Voltage: DC5V Output Interface: 3.5mm Interface Working Environment: -40℃ to 85℃ <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Automatic&nbsp;Telegraph&nbsp;Key Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>