In the days before there were so many technological options, people had to look for their keys all on their own. If you lost your keys, you were just out of luck until you or someone else found them. But now, thanks to some great advances in technology, it's possible to find your keys more easily than ever before. It's often faster, too, so you're less likely to be late for work. Key finders are small devices, and they can be used for many different objects, such as glass, wallet, laptop, and so on.
Retekess new arrival TH104 adopts wireless technology with the 433.92MHz. This technology is widely used in the working range, so the system is very mature.
Many people care about some features for the system, Let's check the questions below:
How reliable it is at actually finding your keys
The range it had, where it could detect the keys
The cost, for those who are budget-conscious
How long it lasted before it needed new batteries
What kind of warranty is offered
The answer is：
433.92MHz frequency is widely used in short-range communication and technology is very mature, so the signal is very stable.
The range can be 40M in the open area.
One whole set: One transmitter with 6 receivers cost about 20USD without shipping fee.
We use the CR2032 3V battery, you can use for about 3 years
We support 30 days no reasons return and 2 years warranty
If you have other questions, pls feel free to contact us at firstname.lastname@example.org
Here is one picture for the package detail