Specification Brand : GOWENIC BulletPoint1 : TOUCH SENSITIVE: Auto telegraph key is touch type, standard 3.5mm output interface, stable performance and less interference. BulletPoint2 : 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. BulletPoint3 : EASY TO OPERATE: Users can realize all functions of CW automatic with two fingers touching the ball, which is convenient and BulletPoint4 : PCB CIRCUIT: Telegraph key is printed with PCB circuit, resistant, good stability and convenient for outdoor use. BulletPoint5 : 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. ExternallyAssignedProductIdentifier : 7662647080079 Frequency : 108 MHz HardwareInterface : 3_5_mm_audio ItemName : 5V Automatic Telegraph Key, CW Morse Codes Key with Magnet Fixed Base, CW Morse Codes Key for Shortwave Radio 3.5mm Output Interface ItemTypeKeyword : shortwave-and-all-hazard-radios Manufacturer : GOWENIC Material : Aluminum PartNumber : GY4104 PowerSourceType : Battery Powered ProductDescription : Specification: Item Type: Automatic Telegraph Key Material: PCB Output Interface: 3.5mm Interface Working Environment: -40℃ to 85℃