12-48V 300A Battery Disconnect Switch | Dual Battery Isolator Kill Switch for Truck, RV, Marine, Auto

Note: There is no cable in our package, you can use your older one. The instruction is in our image, very simple to use. If you have any further question, please feel free to contact us. Thanks. High Low switches for ringer sound. To increase the volume of telephone ring in noisy places. To help the haring-impaired to recognize ring coming. The lamp flasher is offered to avoid the ring noise in a quite environment. Back-side Hole Design for Hanging Package Includes: 2xTelephone Ringer Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.