User Manual
Temperature Functions (1841)
Monitor up to four temperatures. Provides High/Low level alarms for each channel.
Connections
IMPORTANT! The Sensing Description section of this manual gives important details to the location of sensors in the AC and DC electrical
systems of the boat. Improper location and conīæguration of sensors can result in erroneous readings and possible damage to components.
Pin-out Table
1841 Connector Pin Assignment Table
8 Pin Connector*
Function
1 Required Connection
2 Required Connection
*The 8 pin low voltage connector supports wire sizes from 16-26 AWG
3
4
5
6
7
8
DC Negative
DC Supply
Relay DC Out to Load
Relay DC +
Temperature 1
Temperature 2
Temperature 3
Temperature 4
USB Micro USB Port
4
Meter Power Supply Connections
All meters must have pins 1 (DC Negative) and 2 (DC Supply) connected. These pins are used to provide power to the meter. Connect pin 1 to ground
and pin 2 to a 12V to 48V power source.
Temperature Connections
Use Blue Sea Systems Temperature Sensor 1821
Only use Blue Sea Systems temperature sensor PN 1821. Other temperature sensors may not give the correct temperature result.
The negative lead of all the temperature sensors should terminate as close as possible to pin 1. For a simple and clean installation, use
Blue Sea Systems PN 2304 as a small common bus bar for all of the meters DC negative connection. There should be one connection between pin 1 of
the meter and the bus bar using 18 AWG wire. This connection should be as short as possible to minimize temperature reading errors.