this Gsm Ashtry listening device has a sound function which can automatically call back. it features clear voice, long standby time, simple operation, Simple operation, stable performance, easy installation and outside control, etc. which can be used distance monitoring,home surveillance and child custody.

Main Feature

Ashtray Shape GSM Listening Device
Triband,support GSM 900/1800/1900MHz
Sound Activated
Call Back function

Operation:

Boot-Strap
Open the back cover, insert the SIM card into teh socket then it will open automatically . the indicator will light 5-8seconds. after the indicator light put off, close the back cover, then the dial-up can be used.
Installation
Please note the Gsm network signal stength when you install. Do not install in the absence of signal or weak signal areas, so as to affect the usage or lead to cannot be used.
Setting of number
Switch out to the B position before you wirte code. sending GDM letters(Note: GDM necessary to complete capital letters) by message plus the phone number(such as GDM13988888888)that calls you, then it works.
Sound control function
Put the switch to the B pOSITION. IF YOU DO NOT NEED SOUND-CONTROL , Please switch out to the A position. At this time, it will not dial back automatically whether there is sound or not from outside, and you only can anser the call.

Product Note:

charge 6-8 hours before first using, in order to achieve better results.
Pls use the charger that is equipped with the machine.
Standby time: When use sound-control, it will standby 3-5 days. If not, it will standby 6-15days. but it depends on frequency of use.
Check SIM card whether is put in right place or put the card into plug again to restart.
put the card into plug again to restart.
Check whether its GSM card, because this machine is used GSM network.
Check the signal strenth in the installation by your mobile.

Package Contains:

1 x ashtry gsm listening device
1 X Charger
1 x USB charger cabel
1 x screwdriver