Features 1、FINE PROCESSING: The key uses silver plated contacts, and the lacquer surface is treated with environmentally friendly matt, with stable performance. 2、DURABLE MATERIAL: The key body is made of excellent plate, and the bottom original rubber non slip strip, which has a long service life. 3、3.5MM OUTPUT INTERFACE: The output interface is a 3.5mm dual channel socket, the connection is stable and reliable, and it is easy to install. 4、HIGH PERFORMANCE: The automatic paddle keyer is compact and lightweight, with fine processing, has high sensitivity and good reliability. 5、FOR RADIO EXPERIMENT: This automatic key is ideal for radio amateurs, for CW Morse code or shortwave radio communication experiments. Specification Item Type: Automatic Paddle Key Material: ABS, excellent plate Product Size: Approx. 76 x 66 x 40mm / 3 x 2.6 x 1.6in (Excluding the Paddle Protrusion Size) Output Interface: 3.5mm Dual Channel Package List 1 x Automatic Key