DK-9121RL User Manual
VER: 0.1
Page 3 of 8
Electrical Specification
1. Operating Voltage
Keyboard supply voltage: 1.8V-3V (2 AAA batteries)
2. Current Consumption
Current use :< 10mA
3. Sleeping Mode
3.1 Timing to sleep mode: 10S (The time from all keys are free to the keyboard turn to
sleeping mode)
3.2 Current during the sleeping mode :< 0.05mA (finally stable the current)
3.3 Wake up: press any key of the keyboard
4. Low-voltage indicate
When the voltage below 2.2V, the LED light was flashing twice as the frequency of 10 Hz,
pause 1 second and then flashing twice again, which means the power is low. (No action
during sleeping model)
5
Wireless specifications
2.402-2.481GHz frequency coverage.
GFSK RF transceiver
High Speed RF link data rate Max. 1M bit/s
