EM-TRAK AIS B921 CLASS B TRANSCEIVER but it also reduces the

but it also reduces the need to compensate for pressure

Crafted for safety and comfort

Twin horn trumpet

Permanently lubricated bearings

This kit will only fit trailer spindles that have a 1" bearing surface with a 1

EM-TRAK AIS B921 CLASS B TRANSCEIVER but it also reduces theThe B921 AIS Class B transceiver is small, light weight, yet delivers the very best AIS receive and transmit performance and can be easily fitted without screws. The B921 uses an ultra low power consumption AIS engine and is ruggedized against extreme shock, vibration, temperature damp and water. Integrated high performance GPS receiver and antenna Connects to any navigation display or chart plotter NMEA 2000 & NMEA 0183 Rugged, small & lightweight