Question 1

Hi. How do you give the two transmitters different rings?

Accepted Answer

After searching all over I found out how to do this, to make it easier get someone to help you if you've got two transmitters (front and backdoor doorbell buttons let's say) already attached to the walls.
1st. If you've got multiple receivers make sure you can hear them clearly, I plugged mine all in in the same room I was in.
2nd. Ask the other person to press the first door doorbell every two seconds whilst you remain in the room with the receivers so they all chime at the same time, use the chime select button on the first receiver to pick the chime straight after the other person presses the doorbell, do this until you get to the chime you want. At this point one receiver will be chiming the chime you want and the others won't, repeat this process on each receiver until all of them are chiming the same chime. All the receivers are now programmed to chime that chime for that doorbell.
3rd. Ask the other person to go to the second doorbell button and repeat the whole of step 2 again but this time select the different chime you want to use for that doorbell.
4th. Now you test each doorbell, each one should chime a different chime from the same receivers.
5th. Be happy you can tell which doorbell is pressed from the chime that chimes!

Question 2

We live in a country area with quite frequent power cuts and blips.  Do the units have to be re-paired every time there is a power cut or blip?

Accepted Answer

No, dont have to be re-paired

Question 3

the doorbell rings when landline rings how can I stop this happening

Accepted Answer

I'm taking it your landline is cordless phone so I'm guessing it must be set on a frequently near to the doorbell frequency hence the interference I don't think there is a way to get round it it as pressing the doorbell is sending a signal frequency to the receiver your  phone must be doing the same do you have have two hand units have you tried unplugging the single one without the base unit the one just with the charger as was wondering if the transmitter from the base unit to the other phone to meet that one ring is crossing the doorbell line hope you get it sorted

Question 4

Will it work with Blink video doorbell ?

Accepted Answer

Dear Customer,
No, it can't work with Blink video doorbell, it just work with AVANTEK Doorbell.

ASIN	B07KG9T886
Average Battery Life	3 years
Batteries	2 CR2 batteries required. (included)
Batteries Required?	Yes
Batteries included?	Yes
Battery Cell Type	Lithium Ion
Battery description	battery_type_cr2
Best Sellers Rank	57,440 in DIY & Tools ( See Top 100 in DIY & Tools ) 120 in Door Bell Kits
Certification	CE, FCC and RoHS
Colour	Mini (Black)
Customer Reviews	4.7 4.7 out of 5 stars (1,319)
Date First Available	8 Jan. 2019
Delivery information	We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
Guaranteed software updates until	unknown
Included Components	2 × Transmitters (CR2032 batteries included), 1 × Plug-in receiver, 2 × Adhesive tapes, 1 × Screwdriver, 4 × Screws, 4 × Anchors, 1 × User manual
Installation method	Self-Adhesive or Screw-In
Item Weight	190 g
Item model number	CB-21
Manufacturer	AVANTEK
Material	ABS
Package Dimensions	13.2 x 9.4 x 6 cm; 190 g
Part Number	CB-21
Performance description	1000 Feet Operating Range, IP55 Waterproof
Power Source	AC & Battery
Size	1 Receiver + 2 Buttons
Sound level	115 Decibels
Special Features	① Wireless Doorbell ② 2 Remote Buttons Can Have Different Tones, Suitable for Front Back Doors Entrance Ways ③ IP55 Waterproof Dustproof ④ 1000 Feet/300 M Operating Range ⑤ 5 Adjustable Volume Levels with 52 Chimes ⑥ Mini Sized ⑦ Electrical Doorbell
Usage	All of the following AVANTEK doorbells with plug-in receivers can be paired with each other: CB-11/CW-11/CB-12/CW-12/CB-21/CW-21/D-3B/D-3W/D-3G/D-3F/D-3C/DB-21/DB-11/DW-21 (For orders purchased before 2021, it is best to contact us to inquire whether they can be paired.)
Voltage	3 Volts

AVANTEK Wireless Doorbell, 1000 Feet Range, Mini IP55 Waterproof, CB-21

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