Installation Instruction

Battery free wireless doorbell could make use of wireless signal generated by wireless
transmitter module, which is driven by electric energy transformed from kinetic energy
when press the button.Compared with traditional doorbell, it doesn’t need battery at all.
Doorbell receiver*1 Emitter button*1 Instruction book*1
1. Receiver input voltage: AC100V-240V
2. Receiver power dissipation: < 0.3W
3. Ring tone grade: >80dbA
4. Receiver sensitivity: <- 110dbm
5. Emitter button stroke: 3.2mm
6. Emitter button pressure: 3-4N
1. Reset mode: plug in power socket when press and hold volume key.
2. Pair mode: press and hold volume key for 5s, paired when you hear the default ring tone.
(When you hear the music, it's Ding Dong,Voice size recognition)
Plug the receiver in to a AC100V-240V power socket.
Use double-sided adhesive tape to paste the emitter on wall or door.
Paste side A of the tape on emitter Paste the side B on wall.
7. Emitter service life: >200,000 times
8. Emitter power dissipation: 10nw
9. Wireless frequency: 433.9MHz
10. Modulator type: ASK
11. Effective remote distance in open area:
≤100m
12. Operating temperature range: -20℃~70℃
1. 38 chord ringtones, loud and clear.
2. Our product is non-toxic and harmless to health. It complies with EU RoHS, and PAH
standard requirements.
3. Brand new ABS raw material.
4. Stable performance ensured by imported chips, SMT craft, produced and tested under
directive requirements of CE, FCC-ID.
5. Fashionable and exquisite appearance.
6. Our product is environmental friendly, low carbon, low radiation, ultra-low power
dissipation.
7.One receiver could be paired with 5 emittersOne emitters could be paired with
5 receiver .
Ⅰ.Product overview
Ⅱ.Product features
Ⅲ.Boxing list
Ⅳ.Specifications
Ⅴ.Emitter installation
Ⅵ.Receiver bell installation
Ⅶ.How to pair
Choose ring tone(38 pieces of music)
Set proper volume(4th gear adjustment)
Please read the instructions carefully before using to guarantee
correct and proper operation
INSTALLATION INSTRUCTION MANUAL
ZFD-21A

Summary of content (2 pages)