QKSEJ Wireless Keyboard - Wireless

Specifications: Wireless solution: for BK Pairing method: "ESC" + "=" Transmission distance: 8~10 meters / 26.2~32.8ft Frequency range: 2402.65~2480.65MHz Number of channels: 16 Working voltage: DC 3V Working current: 3mA Quiescent current: <1mA Sleep mode: enter the sleep state after 5 minutes without operation Sleep wakeup: press any key to wake up Low voltage indication: white LED Power mode: 2*AAA (not included) Printed circuit board version: V1.0 Printed circuit board material: fiberglass double panel\FR4 For MCU: for BK2425 Number of keys: 109 Package List: 1* Keyboard 1* Receiver 1* Instruction manual