3pcs EQKIT® 60 Seconds Electronic Timer Kit DIY Parts Soldering Practice Board

Instruction: http://img.banggood.com/file/products/20180726215941ETI-60-timer-kit.pdf Feature: Operating voltage: DC5V Standby current: 8mA Working current: 10mA Countdown: 60 seconds Countdown ends prompt: three alarms Soludering difficulty: General Board size: 84 x 84mm Note: Electronic production kit, require buyer soldering assembly. Package included: 3 x Electronic Timer K