Basic family of signal sets are: PL 330, PL 332, PL 333, PL 334, PL 336,PL 426, PL 428 and PL 430. Intended for use in deep freezers and refrigerators. They have on/off switch (option), switch for quick-freezing and power in three colours:

 -          green: device connected to main signalization
 -          yellow: activated function for quick-freezing
 -          red: alarm due to excessive temperatures inside the
            appliance

 Basic technical characteristics of the signal sets:

 -          switching capacity: 6(6)A / 250V ~
 -          minimal life endurance of switches: 3 000 cycles
 -          minimal life endurance of lamps: yellow and red lamps
            15 000 hours, green lamps 40 000 hours
 -          connection: connector for tabs 4,8 x 0,8 mm; connector
            to PCB, individual to connectors 4,8 x 0,8 mm

 Signal sets are VDE approved.