Specification: Functions: electric field measurement. magnetic field measurement. temperature measurement Electric field measurement: Range: 1 V/m-1999 V/m Alarm threshold:>40 V/m Resolution: 1 V/m Magnetic field measurement: Range: t- t Alarm threshold: zero point four T Resolution: 0.01 t Temperature measurement: Range: - 10C~70C Reading display: 3-1/2-bit LCD Test frequency bandwidth: 5Hz-3500MHz Sampling time: about 0.4 seconds Working humidity: relative humidity less than 80% Working voltage: DC4.5V Power supply: AAA1.5V * 3 ( Not included Package Includes: 1 x Radiation Detector 1 x Manual Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!