Transceiver Breakout - RS-485 $250 - $500 The explosion proof horn is

The explosion proof horn is constructed of heavy duty aluminum and the horn is formed fiberglass

200 cubic feet of air per minute

meaning no loose wiring when the tower is collapsed and no exposed wiring to fray or become damaged

The GVP-EMG-24-2L-LED

25 inches   Overall Length:  44 inches   Overall Width:  3

Transceiver Breakout - RS-485 $250 - $500 The explosion proof horn isThis is a breakout board for the SP3485 RS 485 transceiver IC, which will convert a UART serial stream to RS 485. The SP3485 is a half duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps. This board requires a very low amount of power and can operate from a single +3. 3VDC supply. This breakout board includes the SP3485 RS 485 transceiver, filter capacitor, and other components shown