The P8700, P6700 & P4700 limit controllers provide a latched relay output which is activated when process parameters either exceed or fall below the desired value, providing a fail safe cut-off which has to then be reset before the process can continue.
 
 LED indication shows when limits have been exceeded and when the relay is latched out.
 
 With a full range of universal sensor input options, the + Series range  provide a valuable safety control element for most systems.