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sigfox DRY CONTACTS - Guide utilisateur / User guide version V1.2.0
5.3. Example of output wiring
The Dry Contact product outputs can be configured as outputs for controlling the equipment. The outputs are open collector outputs. It is therefore
necessary to add an output relay to control equipment as the product is not able to provide a product output voltage directly.
The following example shows the wiring to be installed for controlling lighting: such as a 24V bulb
EN
The maximum supply voltage accepted by the product is 24V
To control the outputs by a downlink frame, the product must be configured correctly and a downlink frame must be pre-loaded into the server
to be transferred to the product at its next wake up.
You will find a few examples of downlink frames below:
Description
Frame
E.g.:
03 00
03 01
03 0F
Each bit of the second byte of the frame is the command of a digital output
TOR A
TOR B
TOR C
TOR D
GND
GND
Etat TOR A
Etat TOR B
0
0
1
0
1
1
+V
Pull up
resistor
Free wheel
diode
Etat TOR C
Etat TOR D
0
0
0
0
Digital output A at 1 --> RELAY ACTUATION
1
1
Relay
Load (e.g.: bulb)
Description
All outputs at 0
All outputs at 1
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