Handheldsci BT400 User Manual

Battery Charge

Mini USB Port

Power Switch

Thank you for purchasing our product. This is all new Bluetooth Keyboard Adapter version 4.0 with several
enhancements over previous versions:

Based on Bluetooth 4.0 (Bluetooth Low Energy or BLE) with reduction in power consumption and fast connection time.

Works with all types of hosts including Mac, iPad, iPhone, Android tablets and smartphones and all versions of Windows,
as long as they have Bluetooth 4.0.

Compatible with all types of USB keyboards including those with a built-in hub (e.g., Happy Hacking, DAS, Apple, Dell)
and keyboard/trackball combos (both the keyboard and trackball will work).
o
For keyboards with a built-in hub: there cannot be other devices connected to the hub.
o
Does not work with a keyboard/trackball combo AND a build in hub (e.g., Periboard-505 Plus)

Compatible with all PS2 keyboards including IBM Model M

Compatible with all PS2 mice and the majority of USB mice. Scroll wheel currently does not work.

PS2 port: auto detect keyboard and mouse/ No configuration is necessary. Also supports 4 GPIO switches which can be set
up to trigger arbitrary key outputs.

No keycode pairing: pairing just works without typing in any code.
1. LED indicators:
Red LED (for charging and battery status)
If power charger is plugged in: on when battery is charging. Off when battery is fully charged.
If power charger is not plugged in: blinks when battery is low (below 3.5V, Settable). Otherwise off.
Blue LED (for Bluetooth connection status)
Blinks slowly (once per 2 seconds) when the adapter is connected to a host.
Blinks fast (once per second) when the adapter is not connected to a host.
Blinks very fast (twice per second) when the adapter is in command mode.
2. The mini USB port is for battery charging only. You can use any wall USB charger or PC to charge the battery.
3. The PS2 and USB ports can be used at the same time. Maximal combined current should not exceed 200mA. Note the PS2 port is
NOT hot pluggable. You must turn off the adapter before inserting or removing a PS2 keyboard or mouse.
4. If the adapter is not connected to a host, during the first 30 seconds after it is turned on, it will advertise its present and become
available for pairing as in the following process.

Turn on the adapter with or without a keyboard connected. Blue LED should start flashing fast.

On the host, search for Bluetooth devices. The name of the adapter is ADAPTER_nnnn where nnnn is the last 4 of its
MAC address.

When the host finds the adapter, select it and do "pair". If pairing succeeds, the adapter will then be connected to the
host and ready to be used.
Bluetooth Keyboard Adapter BT-400
User Manual (Firmware Version 4.0)
USB Key-
board Port
PS/2 Key-
board Port