COTINSE Motion Sensor Detecter, Driveway Alarm, Motion Detection Doorbell Chime, Long Range 500ft, 1 Passive Infrared (PIR) Sensor & 1 Door Bell Receiver

Es una muy buena relación precio-calidad.. definitivamente lo recomiendo ampliamente. Me llegó en Excelentes condiciones en el tiempo estimado.

We've had a rash of thieves driving up from Miami to steal from our boats. I keep my boat at the house and the rats have even been known to quietly kayak their way in the darkness of night to their targets. They are stealing everything from fishing gear, expensive electronics, and even motor parts while boats sit in the water. Though I haven't been a victim, I do everything I can to prevent these vermin from completing their devious task. I came across this little device accidentally and, after reading about it, thought I would give it a try. Well, let's just say that I am shocked at the range, the motion sensor and effectiveness, and how easy it is to set up. As is common in South Florida, my house is made of concrete block. I was concerned that, like a TV antenna, the receiver would not even get a signal. I simply turned the transmitter to the on position, and plugged in the receiver, and they were already paired and ready to go. Ignore all the comments about how hard it is and that it doesn't work... that must be user error. After some side by side testing, I started to move them further and further apart. I started with just on the other side of the exterior wall and it worked! I tested it by calling with my wife's phone next to the alarm so I could here it trigger while I was outside on the boat. To make a long story short, I even tried the furthest distance through the house to the boat and the unit still operates flawlessly. I've had no false alarms, and the tested distance through concrete block, multiple interior walls, and a saltwater environment is approximately 85 feet. Though it doesn't take up much room (about the size of a bar of soap) and comes with mounting hardware, I simply set the transmitter on the floor at the helm and it silently awaits to notify me of anyone on the boat. This handy little unit can be used anywhere you'd want to get notified of someone tampering with your stuff. Mount one at your back gate, mount one on your mailbox post aimed at your driveway, mount one outside your kids window. There is a multitude of wireless uses for this little gadget. I've got a family member who lives in a condo and keeps his nice motorcycle under cover in an open carport. You could simply place one of these under the cover and it would notify him of anyone tampering with the motorcycle cover. Do you ever stay at an Airbnb or VRBO unit and want to bring your own mobile security? Place this unit on the ground in front of the door when you go to sleep and be notified instantly if someone opens that door while you are upstairs sleeping. It's brilliant and will make a great Christmas gift. Stop second guessing yourself and order this thieving rat repelling security device now.

Me encanta que se puedan conectar a la corriente y así se vuelven más sensibles. Los recomiendo muchísimo

Lasted 2 years , purchased for my wife's salon / store in a mall , went off constantly with all the foot traffic, worked great for 2 years . Only had to replace the batteries once , sensors were very dependable, plenty loud enough, actually have volume up only halfway , after 2 years you had to be within a couple feet of the sensors so we ordered another one for $20 . Great deal for 2 years of dependable use .

Simplemente funciona.