We have the buttons on the outside of the steel building using the included adhesive tape and they are holding. We have the chimes spaced throughout a warehouse and range has not been a problem. By using different tones for each buttons, we easily know which door to go to.
STARPOINT LR Wireless Doorbell Chime With Expandable Add-On Receiver Plugin - Long Range Multi-Unit Alert System, White
37 Review
AVANTEK D-3W Waterproof Wireless Doorbell Kit With 2 Plug-In Receivers Operating At Over 1300 Feet, 52 CD Quality Melodies, LED Flash, And Long Range
34 Review
Wireless Doorbell - PHYSEN Waterproof Doorbell Chime Kits With 1 Transmitter+1 Receiver, Operating At 1300-Ft Range 58 Ringtones 5 Volume Levels & LED Flash, Door Bell For Home/Classroom
33 Review
Wireless Doorbell Chime - AVANTEK Mini Waterproof, 1000 Feet Range, 52 Melodies & 5 Volume Levels With LED Flash
31 Review
Robertson Worldwide ISL432T8HEMV AH 3P20160 120-277V 50-60Hz High Power Factor 4 F32T8 Linear Lamp Fluorescent eBallast
6 Review
Fulham WorkHorse WH2-120-C Adaptable Ballast - 2 Pack
3 Review
⚡️ Sunpark LC-12014T (1) FC12T9 32W Circline (1) 2D 38W (1) FC16T9 40W Circline (1) FC9T9 30W Circline Lamp Compact Electronic Fluorescent Ballast with Circline Lamp Plug 120V
7 Review
💡 High-Quality Advance ICN-4P32-SC Electronic Fluorescent Ballast: Ideal for 4 Lamps, 32W T8, 120/277V
3 Review