I use one of these at two of my gates: GBF Wireless Video Door Phone & Doorbell WiFi Intercom System with a Smart keypad (PL963PMPOE)
I don’t use the two relays for two different locks; I use one relay to open the gate which then closes with the gates automatic timer and one relay to hold the gate open while ignoring the automatic timer.
Sent from my iPhone using Tapatalk