Tenders for Supply of Wireless Remote Control Calling Doorbell Plug Type With Remote, Different Tunes, Suitable For Singl E Phase, 230V Ac, 50Hz Power Supply. As Per Cona Make Modal- Transy 2821. Required For Officers Cabin. Ma Ke: Cona Or Anchor Or Havells Or Pressfit Or Goldmedal. Warranty Period: 30 Months After The Date Of Delivery