Visonic Powermax Binding

Visonic produces the Powermax alarm panel series (PowerMax, PowerMax+, PowerMaxExpress, PowerMaxPro and PowerMaxComplete) and the Powermaster alarm series (PowerMaster 10 and PowerMaster 30). This binding allows you to control the alarm panel (arm/disarm) and allows you to use the Visonic sensors (movement, door contact, …) within openHAB.

The PowerMax provides support for a serial interface that can be connected to the machine running openHAB. The serial interface is not installed by default but can be ordered from any PowerMax vendor (called the Visonic RS-232 Adaptor Kit).

Visonic does not provide a specification of the RS232 protocol and, thus, the binding uses the available protocol specification given at the ​domoticaforum.

The binding implemntation of this protocol is largely inspired by the Vera plugin.

Binding Configuration

This binding can be configured in the file services/powermax.cfg.

Property Default Required Description
serialPort   if connecting via serial port serial port to use for connecting to the PowerMax alarm system; e.g. COM1 for Windows and /dev/ttyS0 or /dev/ttyUSB0 for Linux
ip   if connecting using a network connection the IP address to use for connecting to the PowerMax alarm system
tcpPort   if connecting using a network connection the TCP port number to use for connecting to the PowerMax alarm system
motionOffDelay 3 No delay in minutes to reset a motion detection
allowArming false No enable (set to true) or disable (set to false) arming the PowerMax alarm system from openHAB. For security reason, this feature is disabled by default.
allowDisarming false No enable (set to true) or disable (set to false) disarming the PowerMax alarm system from openHAB. For security reason, this feature is disabled by default.
pinCode   when Powerlink mode cannot be used PIN code to use for arming/disarming the PowerMax alarm system from openHAB
forceStandardMode false No force the standard mode rather than trying using the Powerlink mode. In this mode, the binding will not download the alarm panel setup and so the binding will not know what zones you have setup or what is your PIN code for example.
panelType PowerMaxPro when forcing the standard mode must be one of PowerMax, PowerMax+, PowerMaxPro, PowerMaxComplete, PowerMaxProPart, PowerMaxCompletePart, PowerMaxExpress, PowerMaster10, PowerMaster30
autoSyncTime false No automatic sync time at openHAB startup

Some notes:

  • On Linux, you may get an error stating the serial port cannot be opened when the Powermax plugin tries to load. You can get around this by adding the openhab user to the dialout group like this: usermod -a -G dialout openhab.
  • Also on Linux you may have issues with the USB if using two serial USB devices e.g. Powermax and RFXcom. See the wiki page for more on symlinking the USB ports .
  • For Powerlink mode to work, the enrollment procedure has to be followed. If you don’t enroll the Powerlink on the PowerMax the binding will operate in Standard mode, and if enrolled in Powerlink mode. On the newer software versions of the PowerMax the Powerlink enrollment is automatic, and the binding should only operate in ‘Powerlink’ mode (if enrollment is successful).

Item Configuration

General format is:


where <selector> is required and from the table below, and <parmater> is only required for a few selectors.

Selector Parameter item type purpose changeable
panel_mode - String Either Standard, Powerlink or Download no
panel_type - String Type of the panel no
panel_serial - String Serial number no
panel_eprom - String EPROM version no
panel_software - String Software version no
panel_trouble - Switch Whether a trouble is detected by the panel or not no
panel_alert_in_memory - Switch Whether an alert is saved in panel memory or not no
partition_status - String A short status summary no
partition_ready - Switch Whether the panel is ready or not no
partition_bypass - Switch Whether at least one zone is bypassed or not no
partition_alarm - Switch Whether an alarm is active or not no
partition_armed - Switch Whether the system is armed or not yes (ON or OFF)
partition_arm_mode - String Partition arm mode yes (possible values are Disarmed, Stay, Armed, StayInstant, ArmedInstant, Night and NightInstant)
zone_status zone number (first zone is 1) Switch or Contact Whether the zone is tripped or not no
zone_last_trip zone number (first zone is 1) DateTime Timestamp when the zone was last tripped no
zone_bypassed zone number (first zone is 1) Switch Whether the zone is bypassed or not yes (ON or OFF)
zone_armed zone number (first zone is 1) String or Switch Whether the zone is armed or not no
zone_low_battery zone number (first zone is 1) Switch Whether the sensor battery is low or not no
command - String To trigger a binding action yes (possible values are get_event_log, download_setup, log_setup and help_items)
event_log entry number (1 for the most recent) String Event log entry no
PGM_status - Switch PGM switch ON or OFF yes (ON or OFF)
X10_status device number (first is 1) String or Switch X10 device ON or OFF yes (possible values are ON, OFF, DIM and BRIGHT)


Defining such an item

String Powermax_command "Command [%s]" {powermax="command", autoupdate="false"}

You can trigger an action through a call in a rule:


Here are the available actions:

Command Action
get_event_log Retrieve the event logs
download_setup Read the panel setup (and sync time)
log_setup Log information about the current panel setup
help_items Log information about how to create items and sitemap


Here is an example of what items you can define (only zone 1 and X10 device 1 are considered in this example):


Group GPowerMax "Alarm"

String Powermax_partition_status "Partition status [%s]" (GPowerMax) {powermax="partition_status"}
Switch Powermax_partition_ready "Partition ready" (GPowerMax) {powermax="partition_ready", autoupdate="false"}
Switch Powermax_partition_bypass "Partition bypass" (GPowerMax) {powermax="partition_bypass", autoupdate="false"}
Switch Powermax_partition_alarm "Partition alarm" (GPowerMax) {powermax="partition_alarm", autoupdate="false"}
Switch Powermax_panel_trouble "Panel trouble" (GPowerMax) {powermax="panel_trouble", autoupdate="false"}
Switch Powermax_panel_alert_in_mem "Panel alert in memory" (GPowerMax) {powermax="panel_alert_in_memory", autoupdate="false"}
Switch Powermax_partition_armed "Partition armed" (GPowerMax) {powermax="partition_armed", autoupdate="false"}
String Powermax_partition_arm_mode "Partition arm mode [%s]" (GPowerMax) {powermax="partition_arm_mode", autoupdate="false"}

Switch Powermax_zone1_status "Zone 1 status" (GPowerMax) {powermax="zone_status:1", autoupdate="false"}
Contact Powermax_zone1_status2 "Zone 1 status [%s]" (GPowerMax) {powermax="zone_status:1"}
DateTime Powermax_zone1_last_trip "Zone 1 last trip [%1$tH:%1$tM]" (GPowerMax) {powermax="zone_last_trip:1"}
Switch Powermax_zone1_bypassed "Zone 1 bypassed" (GPowerMax) {powermax="zone_bypassed:1", autoupdate="false"}
Switch Powermax_zone1_armed "Zone 1 armed" (GPowerMax) {powermax="zone_armed:1", autoupdate="false"}
Switch Powermax_zone1_low_battery "Zone 1 low battery" (GPowerMax) {powermax="zone_low_battery:1", autoupdate="false"}

String Powermax_command "Command [%s]" (GPowerMax) {powermax="command", autoupdate="false"}

String Powermax_event_log_1 "Event log 1 [%s]" (GPowerMax) {powermax="event_log:1"}
String Powermax_event_log_2 "Event log 2 [%s]" (GPowerMax) {powermax="event_log:2"}
String Powermax_event_log_3 "Event log 3 [%s]" (GPowerMax) {powermax="event_log:3"}
String Powermax_event_log_4 "Event log 4 [%s]" (GPowerMax) {powermax="event_log:4"}
String Powermax_event_log_5 "Event log 5 [%s]" (GPowerMax) {powermax="event_log:5"}

String Powermax_panel_mode "Panel mode [%s]" (GPowerMax) {powermax="panel_mode"}
String Powermax_panel_type "Panel type [%s]" (GPowerMax) {powermax="panel_type"}
String Powermax_panel_eeprom "EPROM [%s]" (GPowerMax) {powermax="panel_eprom"}
String Powermax_panel_software "Software version [%s]" (GPowerMax) {powermax="panel_software"}
String Powermax_panel_serial "Serial [%s]" (GPowerMax) {powermax="panel_serial"}

Switch Powermax_PGM_status "PGM status" (GPowerMax) {powermax="PGM_status", autoupdate="false"}
Switch Powermax_X10_1_status "X10 1 status" (GPowerMax) {powermax="X10_status:1", autoupdate="false"}
String Powermax_X10_1_status2 "X10 1 status [%s]" (GPowerMax) {powermax="X10_status:1", autoupdate="false"}


Text label="Security" icon="lock" {
    Switch item=Powermax_partition_armed mappings=[OFF="Disarmed", ON="Armed"]
    Switch item=Powermax_partition_arm_mode mappings=[Disarmed="Disarmed", Stay="Armed home", Armed="Armed away"] valuecolor=[=="Armed"="green",=="Stay"="orange"]
    Switch item=Powermax_command mappings=[get_event_log="Event log", download_setup="Get setup", log_setup="Log setup", help_items="Help items"]
    Switch item=Powermax_X10_1_status2 mappings=[OFF="Off", ON="On", DIM="Dim", BRIGHT="Bright"]
    Group item=GPowerMax label="Alarm"


  • Visonic does not provide a specification of the RS232 protocol and, thus, use this binding at your own risk.
  • The binding is not able to arm/disarm a particular partition.
  • The compatibility of the binding with the Powermaster alarm panel series is probably only partial.
  • The TCP connection is implemented but was not tested.