GD-04K Versatile GSM communicator and controller

The GD-04K versatile GSM communicator and controller allows you to remotely control various appliances and report statuses at the same time. It can be controlled remotely by means of a mobile phone with an SMS message or by ringing.

SKU 6ece38be0fa8 Category
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Product Features

It features 2 power outputs (250V/5A) for control. The outputs can be set as status or impulse outputs (impulse length 1s to 10h). When an output is controlled by ringing, a limitation on the number of control events can be assigned to each phone number (suitable e.g. for various paid entrances where a phone number should have a certain credit representing the number of entries).

It has 4 inputs which respond to grounding causing reports of the off/on type in the form of SMS and ringing. Up to 100 authorized numbers can be set for control and reporting.

The GD-04K can also be locally set via USB using setting software GD-Link 2.0 or remotely via settings website.

Backed-up operation in the case of a power supply failure (for up to 24 hours) is ensured through the connection of the GD-04A backup module (sold separately).

Product Specifications

Additional information


10.5 ÷ 15 V DC

Consumption In Standby

approx. 25 mA (+17 mA per relay)

Max. device consumption during GSM communication

200 mA

GSM module operation band E-GSM

850 / 900 / 1800 / 1900 MHz

GSM RF output power

2 W for GSM 850/900
1 W for GSM 1800 / 1900

Triggering of inputs A, B, C, D

connection to GND

resistive load

max. 2.5 A/250 V AC

inductive (capacitive), bulb load

max. 0.5 A/250 V AC


EN 60950-1


EN 301489-7, EN 55022 and EN 61000-6-3

Radio Emissions

ETSI EN 301511

Operational Environment

II. Indoor general (-10 °C to +40 °C)

Dimensions (no antenna)

76 x 110 x 33 mm

GSM Antenna Connection

by SMA connector