The DD1210 is the ultimite in covert dectection device its slim card style designs is packed with professional features, Created for continous protection, body worn appliaction, This unit has 4 different detect modes, Search - is a silent mode, Sound - will produce sound when transmission is detected, Vibro - will vibrate when motion is detected, Sleep - the unit will wake up every 3 seconds to check the environment, If there is an increased level of transmission an alarm will sound and the unit will stay active as long as the transmission is present, The zero feature is when you are ""zeroing"" in on a device press the zero button and the display will clear out and only show when the signal become stronger, Detection of all kinds of active radiotransmitting devices including digital signals, Operation driven by microcontroller, Card-style durable body, Does not attract people"s attention when used or transported, Working frequency range 50MHz – 3GHz, 4 working modes: Normal, Sound, Vibro and Sleep, 8-segment bar graph indicator for precise measuring of the radio field level and location of a bugging device, Integrated antenna, Calibrated sensitivity for rejection of background fields, Low battery indicator, Pulse indicator for recognizing digital transmitters including GSM and RF, Powered by a CR2430 lithium battery, Detects RF and GSM, Unit Size: 3, 25 x 2 x , 25, Uses CR2430 watch type battery, Low battery indicator, Pulse mode for GSM, 4 Modes, Frequency range 50MHz – 3GHz, Includes:, Manual, Cleaning Cloth, 2 batteries size CR2430, Detector, SKU: KJB749