MK 610 Receiver

[Londoner]

Has anybody ever used an MK610 receiver for a conversion?
I have tried binding one to my Spektrum 6i which is fine as far as it goes but there is no sign of any failsafe. I have 2 610s and no failsafe on either, especially the essential throttle down. Is this a feature of this cheapy product or are mine duff?
Perhaps l am missing something in the bind process.
Please help.