Features:Wireless designLarge LCD screenClock functionIndoor and outdoor temperatureMin/Max record of temperature12/24 hours time mode Specification:Screen size: 2.7inchIndoor temperature range: 0~+60Outdoor temperature range: -40~+65Temperature accuracy: +/-1.0Frequency: 433.9MHzTransmission distance: 100mReceiver Power: 2 x AA batteries(not included)Sensor power: 2 x AAA batteries(not included)Receiver Weight: 85gSensor Weight: 81gReceiver Size: 11.2 x 6.7 x 2.5cm/4.4 x 2.6 x 1in(L x W x T)Sensor Size: 8.7 x 6.5 x 2.5cm/3.4 x 2.6 x 1in(L x W x T)Receiver Color: SilverSensor Color: Beige