TECKNET Wireless Tec-k-Net Wall Plug-in Cordless Door Chime Doorbell at 500-feet Range with 52 Chimes

Nice product. Only problem is that when power is off-on, bell rings automatically. Its confuse me whether people call or its due to the power off-on and also disturbing sleep at night when multiple times power goes off and on.

Order had to be cancelled, before delivery, thanks to initiative of supplier to inform about this important part of the item specification, which was missing in the item description. It is extremely important that such critical information is highlighted in the item description, as otherwise it would be normally assumed by the buyer, to be suitable for use in India, resulting either in serious problems or damage to the device, for no fault of buyer.

Love this wireless doorbell unit so far. I didn't need a doorbell; I needed a mailbox alarm and with a few modifications this works great! My mailbox is 700ft from my house so I wanted a way of knowing the mailman had come before trouncing 1/4mi round trip in the Seattle rain. I bought this unit because the range was advertised as 820ft. First thing I did was plug the receiver into a wall outlet on the second floor of my house near a window facing the mailbox. Walked down to the mailbox and pressed the button. Worked perfectly at 700ft! I then proceeded to make a few modifications to adapt this unit to what I really needed. However, if you are buying this for its original intention as a doorbell, you should be all set. It works right out of the box, battery is already installed in the transmitter and it is already paired to the receiver. Shouldn't take more than a few minutes to have it up and running as a doorbell.To answer a few of the questions I see repeatedly asked in the Reviews: Yes, the receiver works on any outlet power 100-240VAC, just like your iPhone charger or laptop power supply. A lot of reviewers said it is only 120V, not true. The instruction sheet that comes with it clearly says, "Receiver Power Supply: 100V-240V". The actual plug is the standard two-blade North American style which we use for 120V, but the unit itself can be used on 220/240V international mains. Next, people seem to wonder how to change the battery in the transmitter (the instructions are woefully silent on this). Simply insert a small flat blade screwdriver in the slot on the back and push a bit to release the tab, then gently pry off the back. Pay attention to polarity when you change battery. The negative end of the battery holder is the one with a small spring on it.In case you're interested, here is how I modified it for the mailbox. This is really intended for those of you who are comfortable with electronics, know how to solder, and are willing to tinker a bit. This will definitely void the warranty (big deal; it only cost $12). It is perfectly safe since you are only messing with the 12V transmitter unit. I took the cover off the transmitter unit and soldered a couple of wires across the pushbutton so that I could add an external NC microswitch I had attached to the mailbox door. When the door is opened by the mailman, the microswitch contacts close and this activates the transmitter the same as if you were pushing the built-in button. The internal antenna is sort of interesting. Half of it is printed on the circuit board, and the other half is a small 1-inch long spring soldered to the end of the circuit board. Figuring the signal would have a problem getting out of the steel mailbox, I carefully soldered a small coax cable at the junction of the PCB antenna and spring antenna, and then soldered the coax shield to the backplane of the PCB. I ran this through a hole I drilled in the bottom of the mailbox. Once exiting the mailbox, remove the outer shield and let the inner conductor of the coax stick out 6-3/4in (170mm) which is a quarter wavelength at the operating frequency. If you want to make a more exotic antenna, visit your library and check out a ham radio book; the ARRL Handbook is a good one. Look for antennas for the 70cm (440MHz) ham band.For the geeks: The frequency this wireless doorbell operates at is 433.920MHz which is pretty typical for remote control gadgets. The signal sent is a short burst of digital pulses. If you hold the button pressed, the transmitter will continually send the signal. I measured the output on an RF Power Meter and mine is showing +0dBm (which is 1 milliwatt, i.e. 1/1000 of a watt). Not a lot of power for 700ft, so I think they have a pretty good receiver. The build quality of the printed circuit board appears very good.

I just received the Wireless Doorbell by TeckNet WA658, and I had to try it right away. As soon as I took it out of the box, I love it already. The design is simple and very nice to look at . It’s white with a blue circle around the volume area. The top button had an icon of a music note for choosing the chime, and the bottom with the same icon but to go backward. The actual doorbell also has a blue circle around the big button with the icon of a bell.I inspected it immediately to see if I would need a battery and when I opened the back of the actual door bell or buzzer, it already had a battery in it, and I am so glad because I don’t carry this kind of battery at home (12V 27A). So, I am absolutely thrilled about that, being that it is a rainy day today, I didn’t want to have to go out and buy one or wait until later to get it.I plugged the receiver on the socket as instructed and heard two “Ding Dong”, and the dogs came running to see what that noise was. Since I am not able to place the door bell button outside right now, I still was able to test it to see if it works and if it will be heard throughout the house. I tested it close by first and the sound was pretty loud, and the great thing about this too is that it has a volume so I can increase it or decrease as I need. I went to the two bedrooms on the other side of the house and pressed the doorbell and I could hear the music coming from the receiver.I am very happy to have receive this. Our doorbell has not worked in years and I didn’t want to buy one because I am not familiar with all that wiring and would just sit until I find someone to install it for me.After testing it out a few more times, I started checking the chimes to see which I would like to use. Oh and it has some of my favorites tunes and right now I chose “Lover’s Concerto”. I love that song and it is never tiring to listen too. It has some kids old music like the Farmer in the Dell and Old McDonald’s had a farm, but I love that it has Christmas music. Our dog Buster was so curious because he hasn’t heard that sound before that he came close to it, and as his face was close to the receiver I pressed the button to choose music and it was a couple of ding dong and a woman’s voice saying “hello, hello”, and the dog got startled and jumped back really fast and high… I thought that was cute and funny.Normally, when people come to the house they would have to call me to make sure I can let them in. Since I have 4 dogs, I lock the gate because I don’t want them getting out and most of the time people are screaming outside, and if the dogs didn’t bark they would stand there screaming and I wouldn’t hear it. Also, when we have package coming, they end up throwing the package on the ground when it is too big to fit the mailbox and sometimes they don’t leave the package and that’s an inconvenience for the couriers and me. At times, like today while I sit and wait for the package to come, I am by the window and constantly running back to see if the mailman was outside. There has been times when I needed to return something and the courier comes but by the time I see them, they are taking off already. So, this doorbell will definitely serve its purpose for this household.I recommend this product. It is easy to install, just the adhesive that will need to go in front of the gate and the receiver plugged in a socket. It is done! For the price of $8.99, this door bell is A+ in my book. The product also comes with a two years warranty. Thanks TeckNet.

Excellent product Excellent service

We lived in a condo-like building and this worked great for a door bell. It has a variety of music jingles to choose from so it spices up any condo! It is also very easy to install and to operate. Yes, I would buy this again.

People now actually use my doorbell since it's no longer hidden. Works well and you can choose your sound.