Interlock switches Solenoid safety Switch Spring Lock / Solenoid Lock 2-contact / 4-contact Silver block contacts suitable for small loads IP67 (IEC60529) Type 4X Indoor Use Only More Unlocking with key Spring Lock / Solenoid Lock 2-contact / 4-contact Silver block contacts suitable for small loads IP67 (IEC60529) Type 4X Indoor Use Only More Rear unlocking handle Long/short two handle lengths2-contact / 4-contactThree sets of actuators for selectionHead rotation in 4 directions allowing 8 different actuator entriesIP67 (IEC60529) Type 4X Indoor Use Only More Escape button to unlock Inside / outside the door, two types of escape buttons to unlock Spring Lock / Solenoid Lock Three sets of actuators for selection Head rotation in 4 directions allowing 8 different actuator entries IP67 (IEC60529) Type 4X Indoor Use Only More