High reliability & high precision sensor:high quality PCB board guarantees high reliability & precision of temperature and humidity monitor sensors.measuring 10 sensitive VENTS every 10 seconds,Temperature range: 14F-122F(-10~50C), temperature accuracy: +/- 1C, humidity range: 10~99%, humidity accuracy: +/- 4%,Three remind you of the day's comfortable. Alarm Clocks Funtion & Snooze:Room thermometer Works as a mini digital clock show the time (12/24 Hour) ,hourly chime function,But it doesn't bother you.indoor thermometer digital can also be used as an alarm clock with snooze function, the alarm ring for 1 minutes, "LIGHT" button can stop the ring,the alarm ring again after 8 minutes. Backlight Function & Zero radiation:This humidity gauge indoor thermometer with backlight function ,you can check the measurement data at all times and take good for 24 hours a day(Battery powered: lit for 5seconds),The product is radiation-free which is also suitable for baby room. Artwork-like hygrometer indoor ,Provide three Ways: Wood grain material brings us to nature,stylish Streamlined 3D panel. You can unfold the bracket and place it on the desktop. There are wall-mounted holes on the back to install on any wall. The built-in magnet can also be attached to metal surfaces such as refrigerator so it can be used in a variety of occasions. (The color of the matching battery is random, and specified colors are not accepted) Color: Black Material: plastic Package Contents: 1 set * CH-915 electronic digital display temperature and humidity meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.