The invention relates to a brake release device (1) having a hydraulic actuating cylinder arrangement (400) for actuating a brake arrangement, wherein the actuating cylinder arrangement (400) comprises a cylinder tube (403) and an adjusting piston (401) adjustable in the cylinder tube (403) between a first and second working position on the cylinder tube (403) a plurality of circumferentially arranged receptacles (406) are arranged, of which at least two a sensor (407a, 407b) carry, which is adapted to detect a first operating position of the actuating piston (401), wherein upon detection the first working position, a first sensor (407a) generates a switching signal to a pressure device acting on the actuating cylinder arrangement (400) and a second sensor (407b) emits a switching signal to a control device.;The invention further relates to a brake release device (1) having a hydraulic actuating cylinder arrangement (400) for actuating a brake arrangement, wherein the actuating cylinder arrangement (400) comprises a cylinder tube (403) and an actuating piston (401) adjustable in the cylinder tube (403) between a first and second operating position ), wherein on the cylinder tube (403) an adjustable receiving arrangement is arranged, in which a receptacle is arranged, which carries a sensor (502) which is adapted to detect a second operating position of the actuating piston (401) and upon detection of the second Working position of the sensor (502) emits a signal to a display device, which indicates the second working position.
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