Technaxx TX-100 Manuel D'utilisation page 6

Note:
It is possible to operate the remote control from outside the closed
car through the window.
The remote control gives an acoustic and a visual feedback by
pressing the button
USB charger function
If the device is powered from a car cigarette lighter socket, you can
connect the USB charger port to your mobile phone with a USB
cable* (*not included). The device now is working as mobile phone
charger. It is also possible to charge other devices via USB.
Note: Maximum output of USB is 2x 1A.
Dual Mode
If you have two car alarms you can handle them with one remote
control. No need to take two remote controls with you. For example
you can store one car alarm in the luggage compartment and the
other car alarm in the centre console in the front of the car.
But before installing you have to pair both devices with the remote
control. That needs to be done by inserting both devices at the same
time to cigarette lighter socket.
Now both devices are for 5 seconds in pairing mode. Press the
button on the remote control for pairing both devices with the remote
control. 4x "beep" will confirm the pairing. For pairing also look under
Get started point 2.
Attention: You cannot pair the devices one after another. It is
necessary to plug the devices in at the same time to use one remote
control.