Wireless Warehouse Doorbell with Firebell

This wireless warehouse doorbell is the longest transmission range known with a 4000 feet line of sight. As anyone knows working in a warehouse can loud, very loud.  The receiver has many options including excellent volume control.  We would recommend any of the accessories should the fire bell want to be used in addition to any of our other accessories.  Included is Transmitter , Receiver and shipping . Need a further transmission range ? May also be used with any Dakota alert 4000 series alarms to act as a relay to transmit the wireless signal further if necessary   PRICE TO INCLUDE FIREBELL AND 10 FEET OF WIRE and shipping RECEIVER :  : 12 tones with one 12 volt relay and a two Form "C" relays as well as a timed output of 1 second   to 5 minutes May add unlimited RC 16 / DCR 4 K + to Dakota alert 4000 series products TRANSMITTER : The doorbell can also function as a magnetic contact or a magnetic contact may be used with any of the Dakota 4000 series products The transmitter is ea