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Incognito F&S
Loop CardVerified against cited sourceUnknown

ESSER by Honeywell FX808331 Loop Card

Hot-pluggable, automatically recognised loop module for FlexES Control, supporting esserbus and powered esserbus-PLus operation.

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Recorded specifications

Part Number
FX808331
Hot Pluggable
Yes
Maximum Devices
127
Supported Protocols
esserbus, esserbus-PLus
Integrated Isolators
Yes
Automatic Recognition
Yes
Maximum Loop Length Metres
3500

Verified compatibility

Requires Option

ESSER by Honeywell FlexES Control FX2

Linked product → this product

High confidence

ESSER documents FX808331 as the esserbus and esserbus-PLus loop card for FlexES Control.

Hardware scope
FX808331 in a FlexES Control FX2 module slot
Firmware scope
No firmware restriction recorded
Linked product type
Control Panel
Last verified
2026-08-09

Compatibility evidence

Supporting sources

FX808331 loop card esserbus / esserbus-PLus module for FlexES Control

ESSER by Honeywell • Checked 2026-08-09

Source-checked
Open official source

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