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Video: How to Lock and Unlock the “RENF22R2MMW NFC Timing Relay” product using smart phone?

Step 1
Select <Protection> button.

Step 2
Press the Read button. Place the phone in front of NFC Timing Relay.
<Read Relay Successfully> screen appeared after Uploading is successfully executed.

Step 3
Press <Lock Relay> and enter password to lock the product setting.
[*1] Place the phone in front of NFC Timing Relay. 

To unlock you can simply enter <Unlock Relay> button and enter password. 
Repeat [*1]

Other info: Kind refer to the attached file, Lock Unlock Relay.mp4
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