Especially for the price, these are great ! I got them to work about 400 feet with clear line of sight and they easily work from 1 corner of my house to the opposite corner of the other floor.
That means it works through a floor and multiple walls. Though they are not high security, their security is enough that I have never had any issue with outside interference.
Stylish & Safe: Sussexhome Carpet Stair Treads For Wooden Steps - 4-Pack Of Self-Adhesive, Pet & Kid-Friendly Indoor Treads To Prevent Slipping
51 Review
Easy Install White Magnetic Door Screen For Doorways And Sliding Doors - Fits 34X82 Fiberglass Mesh Screen With Heavy Duty Magnets - Screen Size 36X83
36 Review
Upgrade Your Stair Safety With SUSSEXHOME Polypropylene Carpet Strips - Easy To Install Runner Rugs W/ Double Adhesive Tape - Set Of 7 Decorative Mats In Brown
38 Review
Ensure Safe Steps With Outdoor Non-Slip Stair Treads - 10 Pack Of 6"X40" Black Anti-Slip Strips
42 Review
Seal And Insulate Your Doors And Windows With TamBee Self-Adhesive Weatherstrips - 65.6 Ft Black Roll
38 Review
High-Performance Convection Heater By Mr. Heater Corp, Ranging From 75K To 200 BTU/HR
47 Review
Universal Rubber Weatherstripping Kit For Garage Door Bottom Seals - Effective Replacement With Weatherproof Threshold Buffering & Sealing - 5/16" T Ends, 3 3/4" Width - 16 Ft Length
29 Review
Keep Drafts Out: 16Ft Long Silicone Seal Strip For Doors, Windows & Showers
33 Review