Connecting VT700 / GSM modem

Installation of GSM modem


To install and connect extension units: switch off the appliance, unplug from the outlet or disconnect the power connector. 

1

Carefully unscrew three screws holding the cover and open it.

Depending on the monitoring system, it may have 1-Wire, Antenna, GSM or Dry Contacts, or any other additional modules installed inside. Carefully open the box by unplugging, if necessary, any cables that connect from the top cover to the bottom cover.

2


1) Connect the antenna cable to the modem board. Carefully connect the U-Fl antenna cable to the input U-FL connector and gently press it. If possible install the connector on the seat with a magnifying glass!


2) Unscrew the nut and washer from the antenna cable

3


1) Mainboard should already have two metal spacers mounted on it. If it does not, please request them from the manufacturer.

2) Place the GSM modem above the metal spacers and male pin strips located on the mainboard. Gently push the GSM board downwards so that:

   a) Male pin strip on mainboard (3pins) inserts into Female pin socket on GSM board (3pincs)

   b) Male pin strip on mainboard (7pins) inserts into Female pin socket on GSM board (7pincs)

   c) Two holes on the GSM board are located directly above metal spacers and the GSM board touches metal spacers.

3) Screw two M3 screws supplied with the modem through the holes into metal spacers as shown in the picture.

4) Insert antenna wire into hexagon mounting hole located at the front or at the back of the unit (e.g. VT335 has a front hole SMA only)

4


The antenna wire should now stick out to the front or to the rear of the unit (e.g. VT335 has a front hole) just like shown in the picture.

1. Put a washer on the end of the antenna wire thread.

2. Screw the nut onto the antenna wire thread to the maximum with your hands.

3. Now use a wrench to tighten the nut

Do not tighten the nut on the thread too hard!

4. Screw the antenna to the end of the antenna wire thread.

6

Carefully place the top cover back so that all cover wings fit in and all cutoff points match the panel holes.