4 0 out of 5 stars 3 ratings based on 3 reviews current price 18 49 18.
Car door open alert system.
1 5 a vehicle door opening warning system in accordance with the present invention is shown comprising a car door opening control unit 1 installed in a linkage 51 of a car that extends out of a car door frame that is movable to open close a car door 5 that is hinged to the car door frame a normally closed contact switch 2.
Wifi security system door sensor compatible with alexa app control and message alert function 4 door open alarm and 1 wi fi gateway no monthly fee only support 2 4g 5 kits 3 1 out of 5 stars 38 55 88 55.
We have door sensors that are activated when the entrance door opens or when the entry way is always open and a new customer walks through.
Govee door open chime upgraded 1 magnetic door entry alert security contact sensor 1 wireless doorbell plugin receiver 330 feet 36 tunes 5 volume levels led indicators 4 4 out of 5 stars 398 18 99 18.
Fosmon wavelink 51004hom wireless door open chime 500 feet 52 tunes 4 volume levels led indicators 1 magnetic door entry alert security contact sensor and 1 wireless doorbell plugin receiver 4 2 out of 5 stars 2 044.