About This

• Unique 433MHz wireless door bell signal penetrates multiple floors & walls even thick reinforced concrete, brick & stone.
• USA Engineered Wireless Door Chime With Commercial Doorbell Features: Durable, ABS IP65 waterproof door bell button with green LED.
• No Limit On How Many Doorbell Chime Wireless Receivers You Can Add: Unlike other doorbell chimes, you can add as many receivers as necessary to provide the coverage you need as far as 4000' away.
• Expand By Adding Select Safeguard Supply ERA Products: outdoor motion sensor (ERA-DSTX), indoor motion sensor (ERA-PIR), door contact (ERA-UTX), portable receiver (ERA-VPRX), power receiver (ERA-DCRX).