description extech hygro thermometer anemometers light meter 4-in-1 meter measures humidity, temperature, air velocity and light. dual lcd simultaneously displays temperature and air velocity or relative humidity. high temperature air or surface measurements can be made using the built-in type k input. comes complete with built-in humidity sensor, light sensor and vane wheel, wrist strap, and 9v battery. california proposition 65 warning. features ergonomic pocket size housing with large dual lcd simultaneous display of temperature and air velocity or relative humidity data hold to freeze the displayed value records minimum/maximum readings built-in low friction vane wheel improves accuracy of air velocity in ft/min, mph, m/s, km/h, and knots built-in precision thin-film capacitance humidity sensor for fast response high temperature measurements using type k thermocouple utilizes precision photo diode and color correction filter cosine and color corrected light measurements complete with built-in humidity sensor, light sensor and vane wheel, wrist strap, and 9-volt battery specifications acme tools brand name extech acme tools part number 45170e additional contents wrist strap additional features n/a assembled weight (lbs) 0.528 batteries included yes california proposition 65 warning required no compatibility type k country of origin taiwan digital / analog digital display format digital globaltradeitemnumber (gtin) 00793950451700 internal supplier part # 45170 internet product code (ipc) 49dad069a65 lcd display yes manufacturer warranty 1 year mounting bracket included not required mounting hardware none mounting type no overall length (in) 6.1 overall thickness (in) 1.3 overall width (in) 2.4 package contents wrist strap package depth 2.362 package height 7.086 package weight 0.528 package weight (lbs) 0.528 power source 9 v battery solar powered no upc 793950451700 weight (lbs) 0.31