Brand N/A Model YB27T Quantity 1 Color Black Material Plastic + iron Specification Power supply voltage: 4.5~30V (wide range); Standby battery: CR1220 cell battery (the back-up source of clock could drive working for over 6 months with no power supply); Working current: 120mm; Time accuracy: 2 sec/day; Display style: 0.4 inch LED with red color; External dimension: 48 x 29 x 21mm; Installation pore: 45.5 x 26.5mm; Working condition limitation: Minimum power supply voltage: +4.5V; Maximum power supply voltage: +30V; Working temperature: -10'C~+65'C; Working humidity: 10%~80% without condensation; Working air pressure: 80~106kPa Features Electronic clock Application Various electronic products or DIY projects English Manual/Spec Have Packing List 1 x Electronic clock (12cm-cable)