New GF07 Mini GPS GSM/GPRS Car Tracking Locator Device Sound Recording Microtracker Loss Preventer Tracker Retainer There should be a 2g base station or a 2g upgraded base station locally Description: Usage: No matter whether the alarm locator is placed in the car,children's schoolbags,old people's pockets or valuables bags,you can send SMS instructions to the alarm locator by mobile phone to inquire about the location of the alarm locator,which is convenient for you to monitor the whole process and grasp the location of the target in real time. Product features: Remote operation: You can control the locator by SMS to perform and stop recording,positioning and other tasks. Remote location query and online tracking: supports remote query of the current target location and real-time tracking. Expansion TF card: Support expansion of TF card and remote clearing of TF card memory. Remote inquiry of locator status: it supports remote inquiry of whether all functions of the host are turned on or off,battery capacity,binding number,signal strength,startup frequency,GPRS,TF card capacity,etc. Remote recording: Support the remote recording function of the locator. Voice-activated callback: It supports remote activation of voice-activated callback function. After activation,when the sound around the locator is greater than 40dB,the locator will automatically call the preset mobile phone number. One-way call: When dialing the locator number,you can hear the sound around the locator (the locator will not emit any sound or light during the call). Specifications: Product: GF-07 positioner Color: black Material: engineering plastic Battery capacity3.7 V 400 mah Li - ion Standby time12 days Working time4 to 6 days Talk time150-180 minutes FormatGSM/GPRS GPRSUpload60,TCP/IP GSM positioning time: 25 seconds Other parameters: Talking current: 150mA Standby current: 2.5mA Operating voltage: 3.4 4.2V DC Open voice control current: 30mA The expansion cardMini TF card Working temperature- 20 C to 55 C Appearance size: 3.5* 2.0* 1.4 cm (L * W * H)