What 433Mhz gateway to use?

[WallyR (Wally)]

I would say that is way overkill.

MQTT ESPHome/ESP32 Alarm Keypad with Screen

[original_24abf3ed-6659-473c-b385-99c695a5fb52_PXL_20230802_111952736] This is my MQTT ESPHome based Alarm Keypad for Home Assistant, now with screen See below for the original version. This comes with a blueprint to automate the alarm panel connection including feeding the display with the alarm state. Top two LEDs appear as buttons, the bottom 2 LEDs appear as lights. These are controlled by the automation for feedback. [ESPHome Alarm Keypad with Screen Demo] …

There are also many versions with a touchscreen instead.