The GEMU 1234 electrical position indicator for linear actuators is microprocessor controlled and programmable with an integral analogue electronic travel sensor system.
Optical position indication is made by LEDs and electrical position feedback by active digital output (switching current 200 mA).
The IP 65 housing is made of corrosion resistant plastic.

  • For short stroke linear actuators (max. 10 mm)
  • Automated end position programming
  • Minimal overall height (< 65 mm)
  • Switch points selectable
  • OPEN and CLOSED indication as standard
  • Quick cable connection
  • Easy to fit
  • Easy to use
  • Can be retrofitted to GEMÜ valves
  • Wide supply voltage range
  • Accuracy +/- 0.1 mm
  • Option: Field bus connection (AS-Interface)


Type 1234&PN=1234
Field Bus AS-Interface; 62 Slaves, Spec. 3.0 Without Field Bus
Accessory Acessories
Input/Output Signals Programming Input
OPEN/CLOSED position feedback
Electrical Connection M12 Connector 5-pin
Mechanical Connection M 12 x 1 thread for valve connection
Travel Length 10 mm
Housing Material Black PSU housing
Protection Class to EN 60529 IP 65
Electrical Protection Class III
Mounting Position Optional
Mounting M 12 x 1 thread
Certificates AS-Interface cert. no. 65101

Operating Conditions

Ambient Temperature -10 to +70 ºC
Storage Temperature -20 to +70 ºC


EC EMC Directive 89/336/EEC
Emission of Interference EN 50081-1
Immunity to Interference EN 61000-6-2
EC Low Voltage Directive 73/23/EEC


Housing Cover PSU black
Housing Base PSU black
Seal Material NBR
Retaining Ring A2