- Wide working voltage: 3 - 5V
- 4 display modes: Only time / only date / only temperature / alternate display
- Temperature display function， display range: -9 to 60 degree， with error correction setting ( -5 to 5 degree )
- With time display error correction function ( -9 to 9 sec )， need 24 hours continuous power supply
- Uses DS1302 chip for time keeping， comes with 1 x CR1220 battery
- Uses 5PRM crystal oscillator， high accuracy
- Great for DIY projects