Lowrance electronic Electronic Speed Sensor EP-70R - Manual (Page 2)

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The EP-70R consists of the paddle wheel sensor module, a red cable
connector and the smart module, which converts analog speed data to
the NMEA 2000 data format. The cable length from the connector to
the smart module is 16 1/2 inches (42 cm) and from the smart module
to the speed module is 10 feet (3 meters).
The EP-70R speed sensor, like the other LowranceNet Electronic Probe
(EP) sensors, is designed for use with a NMEA 2000 network. Your
sensor, however, is also compatible with LowranceNet blue connector
networks. It can be added to a blue connector network by using a red
female-to-blue female adapter cable. Your sensor MUST be connected
to a NMEA 2000 network or it WILL NOT function.
The NMEA 2000 red female to blue female adapter cable allows users
to add red connector devices to a blue connector network.
Tools and Supplies
Your EP sensor packs with a T connector needed to attach it to a
NMEA 2000 LowranceNet network. If you are connecting to an existing
LowranceNET network, those are all the electronic components you
need. If this is the first sensor you are connecting, you will need to
purchase a LowranceNET Node Kit.
LowranceNET Node Kit for a NMEA 2000 network. Includes a 2-foot
extension cable, T connector and two 120-ohm terminators.