Low profile pneumatically actuated docking module with power fault release

And the peripheral device the elastic mechanism is connected with the measuring head, comprising the locking mechanism of the air cylinder (310) is stretches out. Locking mechanism comprises block system tube (350), A Suoxiao (352) and displacement spring (356). (364) By exerting the controller is a contact the liquid pressure on the lock pin and closing the lock pin to move forward to the position locked. From the first is a liquid pressure and closing the lock pin a shifting function of spring in-situ. (318) Flow by the second liquid channel the piston (310) of the liquid pressure and locking mechanism is to retrocede. When the testing head and peripheral device block system, and a micro-touch and peripheral device of measuring head is a combined together, therefore and between the measuring and heads are formed by the test device for a conductive contact.