low price item!!! Please buy over S$9.9 storewide， single order will not process， thanks for your understanding

Dimensions: 166 × 113 × 49mm
Test environment: temperature 23 ℃ ± 2 ℃ Humidity: 40% -60% RH
Environment: Temperature 0-40 ℃ Humidity: 25% -75% RH
Features:
☆ ☆ first full protective circuit television line voltage measurement
☆ ☆ infrared data detection circuit multiple protection Breakout Board
☆ ☆ 1.5V battery power temperature measurement function
☆ ☆ path buzzer outer magnetic header
This without battery