Check the listing for details. Fast Wall Mount Digital Infrared Thermometer Automatic Non Contact Forehead US. Condition: New. Listed at 20.29 USD. Does not include batteries! You can use a USB connection, or put in a battery. Features:- Noncontact to avoid cross infection.- High-definition display, 5 meters viewing distance.- High temperature measurement accuracy, accuracy tolerance: ±0.2 (34~45℃).- With warning light for detection failure and warning light for abnormal temperature.- Can be applied in different occasions. Office/ Subway/ Family/ Superstore/ Shop/ Community/ Entrance etc.- Using a new chip, the induction time is faster (0.1 s); the pass rate per minute is greatly improved (50 people/min). Specifications:Standby: 5sDistance: 5 ~ 10cmDisplay: digital displayResponse time: 500 msWorking wave: 5 micronsDimensions: 170*115*140 mmAmbient temperature: 5 ~ 45℃Measuring temperature: 0 ~ 80℃Accuracy tolerance: ±0.2 (34~45℃)Theory: F and C degrees (Fehrenheit and Certigrade)Power supply: USB/1* 18650 lithium battery (not included)Placement method: hanging / double-sided adhesive tape / bracket fixingMeasurement method: infrared thermometer without contacting on the foreheadAutomatic alarm for abnormal temperature: red light flashes with continuous alarm sound Package Included:1 X Thermometer1 X USB Cable1 X User Manual Notes:1. Manual measuring, please allow 1 ~ 3mm error, thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.