High Volume 90dB Extra Load External Telephone Phone Mechanical Ringer Buzzer Booster Amplifier Suttle loud indoor/outdoor bell Modular bells and ringers are ideal for factories, farms, offices or any location where an audible signaling device is needed Contains a modular jack that accepts line cords for plug-in installation and is available in single-line only 45-130 VAC Ringing Voltage 90dB Mechanical ringer Modular hook-up Heavy duty Two 4" bells Ringer equivalency 1.0 1 year manufacturer's warranty Pay for defective return shipping with no restocking fees for this item only if a replacement requested. Early And Day After Thanksgiving Holiday Blackfriday Black Friday Cyber Monday Online Electronics Deals Sales Gifts Ideas Specials Shopping Weekend On Amazon Also Has TV, Laptop, Video Games, Computer, Cell Phone, Camera, Furniture, Jewelry, Appliances, Mattress, Refrigerator, Watch, Treadmill, Trampoline, Printer, Blu Ray DVD, Washer, Dryer, Table, gift baskets and Clothing for Teachers, Hostess, Kids, Employees, Host, Dinner, Clients, Students, Coworkers, Friends, Family, and Children