--- title: 4219-4229 Zone Expansion description: Learn how to use the Vista 20p & Vista15p, Enrolling Sensors, Changing panel Settings, and install tips directly from GeoArm. --- [Skip to content](https://support.geoarm.com/honeywell/vista15p-20p/4219-4229zoneexpansion#main-content) English Show submenu for translations ![geoarm-by-alarmclub-logo-2024-transparent.png\]](https://support.geoarm.com/hs-fs/hubfs/geoarm-by-alarmclub-logo-2024-transparent.png?height=50&name=geoarm-by-alarmclub-logo-2024-transparent.png) Open main navigation Close main navigation - English Show submenu for translations - Visit GeoArm.com Visit GeoArm.com Hello. How can we help? - There are no suggestions because the search field is empty. 1. [Support Center](https://support.geoarm.com/?hsLang=en) 2. [Honeywell](https://support.geoarm.com/honeywell?hsLang=en) 3. [Vista 20p & Vista 15p](https://support.geoarm.com/honeywell?hsLang=en#vista-20p-vista-15p) # 4219-4229 Zone Expansion 1\. Connect each module to the control’s keypad terminals and set the device addresses.  See the Table of Device Addresses to select an appropriate address for each module. • VISTA-20P: Up to 40 expansion zones using up to 5 Zone Exp. Modules. • VISTA-15P: Up to 16 expansion zones using up to 2 Zone Exp. Modules. 2\. Connect sensors to the module’s loops. See Figure 8 on the following page. • Use 1000 ohm end-of-line resistors at the end of loops connected to the 4219/4229 modules. (EOLRs used on the control terminals are 2000 ohms.) • Expansion zones have normal response time (300–500 msec), except zone connected to each module’s loop “A,” which can be set for fast response (10–15 msec). 3\. If using relays with the 4229, connect the desired field wiring to the unit's relay contact terminals. 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