【Measurable temperature range】-50~70℃, temperature measurement accuracy: ±1.0℃. 【Measurable humidity range】20%~90%RH, humidity measurement accuracy: ±5%RH, measured every 10 seconds. 【Product size】44 * 44 * 15mm. Battery: one LR44 button battery. The small portable temperature and humidity meter is suitable for every scene. 【Humidity Temperature Monitor】This portable thermometer hygrometer measures indoor humidity and temperature, helping you know the indoor air conditions. 【Wide Range of Applications】The mini digital thermometer hygrometer is widely used in living room, greenhouse, instrument room, basement, warehouse, attic, baby room, changing room.