Federal Signal’s Loud Bell Ringer is a vibrating bell activated by telephone line ringing voltage. The TELB is specifically designed for very loud environments with use of an analog telephone. The ringing signal of 40-150VAC, 16-60Hz and local 120VAC power is all that is required to activate a TelCom signal. This TelCom device is intended to be mounted on a vertical surface such as a rigid wall or post. The TELB has a three conductor six-foot, 120VAC power cord extending from the unit. Connecting the TelCom device to the telephone network is done by running a modular telephone line cord (RJ11) to an existing jack or a duplex jack (customer supplied) into an existing modular jack. The TELB is designed with a durable zinc die-cast housing painted with gray powder coat enamel and features an internal solid-state relay. TelCom devices are designed for high ambient noise areas such as manufacturing facilities, machine and sheet metal shops. They are also useful in large open areas such as a warehouse, loading dock, or a large office.