Freedom is a four-channel device switcher that allows one switch
to be routed to up to four devices, allowing a disabled user to select
for him/herself which device the switch is to be used with at any
point in time. Selecting the device can be achieved either by an
extended press of the input switch, or by momentarily pressing a
secondary select switch (where the user has the motor capabilities
to operate two switches). Where an extended press is to be used,
the duration of the press may be programmed from the keypad.
Devices may be of any form, provided they have a conventional
switch input via a 3.5mm jack socket. Typical configurations
might comprise a communicator, a mobile telephone and a tablet
computer. Some devices (for example the phone and tablet in
the above example) may require additional equipment to allow
connectivity, such as the APPlicator from Pretorian.
The number of devices present may be programmed into the unit,
so that unused devices are not included when moving from device
Furthermore, once all the necessary settings have been made, the
keypad may be locked, preventing further changes. This allows a
rehabilitation centre to configure the unit and then send it to the
client without fear of the settings being changed, for example.
Freedom operates from a rechargeable lithium battery which is
charged via a standard USB cable, or alternatively the unit may be
permanently powered using a power pack or wheelchair auxiliary
port. When using the battery, the unit will operate for several
weeks without ever needing to manually turn off the power. This is
vital since the user may not be able to turn off the power.
Both audible and visible low battery indicators are provided to
prompt the user the recharge and if the battery should become
exhausted, the unit ‘fails safe’ by routing the main switch to device
1, allowing the switch still to be used on the most important device.
If the device is, for example, a warden call system or a mobile
phone, help may then be summoned to rectify the situation.
All four outputs are fully isolated so the unit can work with devices
which do not share the same ground/ earth connection. Freedom
is supplied with a charging cable and four device connection cables.
- Routes a single switch to up to four devices
- Use an extended press of the main switch or a
second switch to move between devices.
- Selectable dwell time when using extended presses.
- Powered from rechargeable battery or external
- Fail-safe connection to device 1 when the battery is
flat or power fails.
- Lock facility allows the keypad to be locked once the
settings have been made.
- Routing one switch to multiple devices
- One or two switch inputs
- Up to four switch outputs
Download the Freedom User Documents