Specifications

In industrial applications, it is advised that the GSM Commander be installed into its own

metal housing and be powered from a separate power supply. (As opposed to sharing one

with other equipment).

Please Note: While the GSM Commander has fairly rugged internal power supply circuitry, no

special provision for lightning protection is made. If the GSM Commander is used in an area

that is prone to thunderstorms, it is advisable to use a commercially available lightning

suppressor (The same applies to inputs or outputs that are connected to wires longer than 2

or 3 meters). The guarantee does not cover damage resulting from lightning strikes! The GSM

Commander can operate reliably from voltages in the range of 10 to 24V DC.

5.2. USB Port

The GSM Commander provides a USB port that connects to a PC using the supplied USB

cable. This allows the PC to configure the unit.

5.3. SIM Card

The GSM Commander accepts a standard GSM SIM card from any network. The SIM card

may be prepaid or on contract. If the SIM Card is purchased as part of a prepaid plan, ensure

than the card is loaded with sufficient airtime.

WARNING: DO NOT Insert or remove the SIM card while the GSM Commander is powered!!

Note that airtime will decrease with every SMS that is sent from the unit. The unit can

automatically detect if the airtime is running low. It is user's responsibility to make sure than

the airtime is topped up. See your network's documentation on how to purchase and load

airtime.

The SIM card is fitted into the back of the unit, as indicated by the legend on the enclosure.

The SIM card will click into place. The SIM card is removed simply by pressing against it. The

card will pop out with a “click” sound, ready to be completely removed.

Before you install your SIM Card:

• Install the SIM card into a normal cellular phone

• Verify that there is no SIM PIN enabled (The phone must not ask for a PIN when switched

on with this SIM card inside) If the phone does request a PIN, you need to enter the

correct pin so that the phone can start, and then disable the SIM Card PIN. See your

cellphone documentation on how this can be done.

• Verify that you are able to send an SMS message.

The SIM card will now work with the GSM Commander.

Please Note: If you are using a prepaid SIM card, be aware that if the SIM card has not

produced a billable event on the network for a long period of time (typically 3 months), the

card will be de-activated by the network, and the SIM card then becomes useless. It is

strongly recommended that you configure the GSM Commander to send you an SMS every

now and then (once or twice a week) so that your SIM card remains active on the network.

The GSM Commander can ONLY check the airtime of a PREPAID SIM card.