GT7 Terminal
Electrical Connections
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HB_GT7-2x00-3x00--EN_12
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External components can be controlled, and status information can be acquired via the digital relay outputs and
optocoupler inputs.
In order to use the inputs and outputs, the respective function of these inputs and outputs must be set in the
app configuration of the active app on the GT7 terminal (see below). Not all apps allow these settings, which is
why the inputs and outputs cannot be used with every app.
NOTE! Observe the permitted voltage and power values of the inputs and outputs in the technical data (see “6.
TECHNICAL DATA”).
Relay outputs
The 2 relay outputs “Rel. 1” and “Rel. 2” can be used to output digital signals to control external components such
as door openers. Both relay outputs are normally open contacts (NO).
The terminals GT7.2x00 have only one relay input. The GT7.3x00 terminals have two.
The desired function such as unlock door, deny access, or block external device must be selected in the
configuration of the GT7 terminal in the “App configuration” section (see “5.6.16 Installed Apps”). The activation time
of the relay can also be set here. The app (e.g., Access App) must provide this option in order to use the relays.
Optocoupler inputs
Digital signals can be acquired with the 3 inputs.
The “Opto” input (see 1 - "Door feedback contact" in Figure 4.2) is a potential-free input, i.e., a voltage and ground
(GND) must be applied. The voltage or GND can be used from the terminals “VOut” of the GT7 terminal (see
example). The voltage must not exceed max. DC +30 V.
The inputs “DATA” and “CLK” (Clock) of the Wiegand interface can be used as inputs 2 and 3. These inputs have
potential and must be connected to GND to set the input active.
The function of the inputs is set in the same way as for the relays in the “App Configuration” of the active app on the
GT7 terminal. The app (e.g., Access App) must provide this option in order to be able to use the inputs.
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