high quality Easy Connection1) Disconnect the safety clip from the treadmill (the one with the magnet) 2) Within 10 seconds, press and hold the power button on the remote and hold it close to the digital display on the treadmill. You should hear an interruption in beeping and then it goes back to constant beeping (the usual alarm indicating the safety is not connected). 3). Place the safety clip magnet back on to the treadmill. You should now be able to start the treadmill as usual.Any question, Please do not hesitate to contact us before leaving Feedback, We will help you resolve it, Thank youOST-SP37747US-NY OST-SP37747US-DK OST-SP37747US-RE SUP37SP747US-NY SUP37SP747US-DK SUP37SP747US-SL SUP37SP747US-RE SP37513BK SP37513RE OST-OSTSP37036NY OST-OSTSP37036GN OST-OSTSP37036YE OST-OSTSP37036WH OST-OSTSP37036RE OST-OSTSP37036BK OST-OSTSP37036SLBrand new Remote Control Made of high-quality ABS, which is wear-resisting and durable, comfortable hand feeling. Package Included:1 x Remote Controller (not include the battery)Compatible With Treadmill ModelsSP37146 (B081JDMJ4J) SP37036 (B07ZRSBP5S) SP37148 (B0842LPY98) SP37747US SP37514 SP37513 SP37522 SP37514YE SP37514RE SP37514WH SP37038RE SP37146BK SP37038NY SP37146YE SP37146GN SP37038SL SP37146WH OST-SP37036RE OST-SP37036YE OST-SP37148BK OST-SP37067GN OST-SP37067SL OST-SP37067NY OST-SP37747US-SL