http://www.hk-aoli.com/goods.php?id=214

Highlights

This mini eavesdropping device is a great spy audio system, just insert a GSM SIM card into the slot of this spy audio device, and put the audio bug at a hidden place, then you just dial the SIM card number to monitor your target, this audio bug also features voice activated and door-open magnet senor call back, so once it detects voice around it or door opened, you will receive its call at once to hear the sound around the audio bug.(0-15m range)

Specification

• VoiceActive and Door Magnet Senor Eavesropping Device with GSM Mobile Phone Remote Control, Spy Audio
•  Frequency: Frequency: GSM 900/1800MHz
•  Voice activated and dooropen magnet senser call back and normal modes
•  Transmission Distance: Nonlimit
•  GSM network long distrance control by using SMS orders
•  Power on/off switch
•  Receive Sensitivity: 10K
•  Standby Time: 5 days
•  Working Time: 3 hours
•  Sensitive Range: 015m
•  Accessories: AC adapter,USB cable
•  Power by either AC adapter and internal Liion Battery
•  AC/DC adapter included: AC 100V  240V, DC 5V, 0.3A
•  Operation temperature range: 10 ~ +50 degree C
•  Operation humidity: 15  85% RH
•  Unit dimension: 6.2*4.1*1.5cm
•  Net weight: 41g
•  User Manual English
•  In retail packaging