K:04 Series

K:04 is a wireless mechanical split keyboard with a modular hot-swap system, 58 programmable keys, and support for a trackball, touchpad, or encoder on either half.

K:04 Series keyboards come with a double switch plate. This is due to the height of the supported MX switches. If you want to use low-profile switches, install only the lower switch plate.

To install mid-profile switches, use both switch plates.

• Layer color — shows the color of the active layer 0-15 on both halves; configured in Entropy
• BT profile — briefly shows the selected profile color on the left half when switching BT0-BT4
• Battery charge level — shows the charge level of each half by color: 0-20% red, 21-40% orange, 41-74% yellow, 75-100% green
• Low battery — if the charge is <=20%, each half shows its charge with a short red blink every 2 seconds
• BLE advertising — the left half slowly blinks blue: the keyboard is available for connection
• BLE reconnecting — the left half quickly blinks blue: trying to reconnect
• BLE pairing — the left half blinks cyan twice: pairing mode
• Host connected — the left half blinks green twice: the keyboard has connected to the computer via Bluetooth
• Split missing — one of the halves briefly blinks yellow: the other half is not connected
• Split unpaired — one of the halves briefly blinks orange: the halves are not paired or the pairing has been reset
• Split connected — both halves blink yellow twice in short flashes: the halves have connected
• System off / deep sleep — both halves briefly light up purple before going to sleep

The keyboard supports wired connection via USB-C. Use the included cable or any other USB-C cable that supports data transfer.

1. Turn on both halves of the keyboard — the halves are already synchronized with each other
2. Select a connection profile on the keyboard — if you need to connect to multiple devices, you can skip this step for the first connection
3. Connect the keyboard to your device — enable Bluetooth on the device, then pair it in the device settings

1. Enable Bluetooth on the device you want to connect the keyboard to
2. Turn on the keyboard by switching the power switches on the bottom covers of both halves to the ON position — the keyboard will enter pairing mode
3. Switch the BT profile on the keyboard using the corresponding keys (layer 3 in the default layout)
4. Start a Bluetooth search on your device and find the keyboard in the list
5. Connect the keyboard to your device

To use the encoder, touchpad, or trackball module, enable it in the keyboard settings. Open the Entropy configurator, select Configuration - Module settings at the top of the main configurator window, and choose the required module from the drop-down list next to Module.