Can I Put A 2k Resistor On A 4219 Zone Expander?

Please Note: This FAQ refers to the newer 4219, manufactured in 2011 or later. The board was reworked and several changes were made. Older versions of the 4219 which can be identified by having only five (5) dipswitches, use 1000 Ohm resistors, rather than 2000 Ohm. These modules also require the use of resistors, it is not optional. The color code on these 1K Ohm resistors is Bro-Blk-Red-Gold.

Yes, each zone that is used on the Honeywell 4219 zone expander must have a 2K-ohm end-of-line resistor connected at the end of its loop.

If EOLR option is selected, terminate each programmed zone with a 2K OHM end of line resistor. Each zone’s max loop resistance is 300 OHMS plus EOL.

EOLR value is 2K ohms.

If normally closed option is selected, connect all zones as NC loops. Make protection zone connections to the module’s 12-position terminal block TB1. Set DIP switch 7 for the desired zone operation either NC or EOLR:

OFF = End of line resistor operation., UL: Set to OFF (EOLR)

ON = Normally closed operation

The method of programming each zone for the type of alarm and reporting code to the central monitoring station varies with the control panel to which the module is connected. Refer to the Installation and Setup Guide for that control unit.

The Honeywell 4219 expander module adds up to eight normally closed or eight end-of-line resistor supervised zones to compatible control panels via the control’s keypad wiring.

The 4219 expander module may be mounted inside the control’s cabinet or remotely. If mounted remotely, there are provisions to tamper protect the unit. Communication to the module is supervised so that it cannot be disconnected from the keypad wiring without detection by the control panel. If the wiring is cut, a tamper alarm or signal will be sent to indicate that the 4219 zone expander has become inoperative.

Remember to always disconnect power to the control panel before installing a Honeywell 4219 expander module and mount the 4219 before making any wire connections.