Manual Jablotron GD-04 (page 2 of 15) (English)

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GD-04 DAVID 2 MKS51202_OS1*

1.2. David can be used as:

• A switch with SMS remote control. SMS texts for switching particular terminals on/off are

configurable.

• A time-switch which can be activated remotely via a mobile phone (the switch-on period is

configurable from 1 second to 10 hours).

• A relay with dialling-in remote control. Up to 50 tel. numbers can be authorized for each

relay. Because calls are not answered dialling-in control within GSM is free of charge. (David

only checks the caller’s number and – if the number is authorized – responds with relay

activation.) This can be used for parking latch control etc.

• A relay with validity-limited dialling-in remote control. Each authorized number can have

a limit to the number of calls. When the call count reaches the limit the tel. number is de-

authorized. This can be useful for pre-paid services such as e.g. parking. Any tel. number can

be re-authorized via SMS by the administrator.

• An SMS reporter. Input A to D activations or deactivations can be reported by SMS and

optionally confirmed by phone calls. Each input can have its own message texts and up to 8

tel. numbers programmed.

• Examples of David applications can be found on http://www.jablotron.cz/david/en/examples.htm

1.3. David can be supplemented with:

• A GD-04A back-up module, which provides David with the ability to work approx. 12 to 24

hours continually without an external power supply, see 11.1.

• A GD-04D DTMF module, which allows you to control David’s output relays by entering

numeric codes (DTMF codes) on the telephone keypad during calls, see 11.2.

• A GD-04P link cable, which allows you to connect David to a PC through a USB port and

perform any desired configuration using GDLink software.

• A GD-04R radio module, which allows input A to D activations via wireless buttons or

detectors of the OASiS series and also provides David with the capability of output relay X or

Y state transmission to UC or AC OASiS receivers. In addition, you can control relays X or Y

“locally” via RC-8x keyfobs (so that an appliance can be controlled both via a mobile phone

and a keyfob). The module also allows heating control (again locally or remotely via a mobile

phone) using wireless thermostats of the TP-8x series.

A detailed description of optional accessories can be found in chapter 11.

2. David’s SIM card

• In order to function, David needs a SIM card, preferably a tariffed one.

• Test the SIM card by using it in your mobile phone – SMS sending and calling must work

correctly.

• Switch off the PIN code protection via the phone menu (or set the PIN code to 1234).

• Check the GSM signal strength in David’s location.

3. Installation

1. The GSM antenna should not be shielded by metals. If necessary, an external antenna

designed for the 900/1800MHz GSM band can be connected via a 50Ω SMA connector.

2. Open the cover and release the electronic circuit board by pressing the tabs.

3. Mount the rear plastic cover at the desired location.

4. Insert a SIM card: Open the SIM card case by shifting the moving part in the direction of

the terminals and tipping it off. Make sure that the card is correctly oriented and insert it.

Close the SIM card case (fold and re-shift the moving part).

I can’t work out how to register new phone numbers to our David garage gate system - the only resident who knew how has moved away. It works fine with my phone which is registered but some people who have just moving in would like to add their numbers . Any help would be greatly appreciated! Submitted on 23-5-2020 at 15:54
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Jablotron GD-04 Manual

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