Honeywell M4-RS232-iso 784870 RS232 Module with Galvanic Isolation
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Honeywell 784870 M4-RS232-iso
784870 M4-RS232-iso is a plug-in compact interface module belonging to the System 4000 M4 module platform, providing a galvanically isolated RS232 serial interface; it features a connector design that prevents reverse/incorrect insertion.
Galvanically isolated RS232
Provides a galvanically isolated RS232 serial interface.
Plug-in compact module
Compact plug-in design compatible with the System 4000 M4 module platform.
Connector preventing reverse insertion
The connector design prevents reverse or incorrect insertion.
SEI2 and ESSER compatibility
Compatible for use with Serial essernet Interface SEI2 (Part No. 784850); compatible with ESSER ES Line, Compact and FlexES Control panels.
Technical Specifications
Model : M4-RS232-iso
Product Type : Interface module (Schnittstellenmodul), plug-in compact module
Interface : RS232, galvanically isolated
Connector : Design preventing reverse/incorrect insertion
Compatible Interface : Serial essernet Interface SEI2, Part No. 784850
Operating Voltage : 3.3 V DC
Current Consumption : max. 20 mA
Dimensions : W 27 mm × H 53 mm × D 15 mm
Design : Compact plug-in module
Module Platform : System 4000, M4 module series
Compatible Panels : ESSER ES Line, Compact and FlexES Control fire alarm panels
Compatible Panel Series : ESSER 800x series panels and IQ8Control
Supported Protocol Context : Connection to external systems supporting EDP (ESSER Data Protocol) via SEI2
Alternative M4 Interface Modules : 784871 M4-RS485-iso; 784872 M4-TTY
Related essernet Modules : FX808340 essernet module 62.5 kBd; FX808341 essernet module 500 kBd
Product Status : Discontinued product (Auslaufprodukt)
Shipping & Return Terms
Fast Shipping: 24-hour delivery within North Cyprus · 3–5 business days between Türkiye and North Cyprus
Returns: 14-day no-questions-asked returns · In original packaging, unused
Warranty: All products are distributor approved and carry a 24-month warranty.
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