{{control.png| Category Controls}}
====== ValueTrigger ======
This module is a part of the [[NetHomeServer]]. The ValueTrigger monitors an attribute of an other Item (a thermometer for example) and triggers actions when the value goes above or below specified values. Typical use is as a thermostat. The value is checked once a minute when the Item is enabled.
===== Attributes =====
  * **State** //[get] [init]// Current state, may be: deactivated, normal, overMax, underMin
  * **LatestValue** //[get]// The latest read value
  * **ValueAction** //[get] [set]// The action to fetch the value. Should be on the form: //get,ITEMNAME,ATTRIBUTENAME//
  * **Max** //[get] [set]// The MAX limit value - a numeric value
  * **Min** //[get] [set]// The MIN limit value - a numeric value 
  * **ActionOnExceedingMax** //[get] [set]// An action that will be performed once when the value passes from under MAX to over MAX
  * **ActionOnDeceedingMin** //[get] [set]// An action that will be performed once when the value passes from over MIN to under MIN
  * **ActionWhileOverMax** //[get] [set]// An action that will be performed on every check where the value is over max
  * **ActionWhileUnderMin** //[get] [set]// An action that will be performed on every check where the value is under min
===== Actions =====
  * **EnableTrigger** Enables the automatic check once a minute
  * **DisableTrigger**  Disables the automatic check
  * **CheckNow**  Checks the value now and performs any actions as a consequence
==== See also ====
[[start | NetHomeServer]]