BoltSafe can also be used in small spaces where cables don’t fit. Narrow spaces happen to be the speciality of the PMS washer. BoltSafe Sensors PMS have a non-contacting interface and require no cable connections. During service, the unit is powered over an inductive interface connected to a Handheld Reader. The BoltSafe Sensor PMS can be read by the Handheld Reader in combination with a PMS-probe. The user can monitor the residual bolt load directly on the instrument.