Dwyer 3100MP - Manual (Page 18)

6.4.2 Disassembling the Housing
The transmitter is designed with dual-compartment housing; one
contains the electronics module, and the other contains all wiring
terminals and communication terminal.
6.4.3 Fail Mode Jumper Switch and EEPROM-Write
Fail-mode jumper switch and EEPROM-Write is located behind
the front cover.
Figure 6-2 Structure of Housing
Figure 6-3 Structure of Electronics Module
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Figure 6-1 Test Terminals