Option Modules

A maximum of two additional relays may be fitted to a controller, provided no re-transmission or transducer power supply is required. They can function as alarms or one can be a second control output (for Heat/Cool applications)
Rating is 2A 240Vac non inductive

An analogue retransmission module that can be configured for 0/4-20mA, 0/1-5V or 0/2 -10V. It can be ranged over a reduced portion of the total instrument range - if the instrument is set for 0-760C, the retransmission can be configured to to be say 0-300C for the full 4-20mA

This module allows up to 32 instruments to be connected on one 2 wire RS485 data highway using West ASCII protocol.
Modbus protocol is available, but to special order only. Please email your enquiry.
See S4SCADA.com for suitable Software packages

This module allows the remote reset (by contact closure) of the latched alarm. Note that this module is mutually exclusive with the RS485 comms module.