I want to be informed if my front door is opened by my child or elderly relative. What Honeywell doorbell kits are suitable?

Honeywell offers Door Entry Kits, which come with a wireless doorbell, a wireless push button, and a wireless door and window sensor, which are all pre-linked in the box. Opening the door will trigger the sensor, and in turn cause the doorbell to emit an alert sound. The product codes for these kits are either DC313xDE or DC915xDE. Product availability may differ from country to country.

Alternatively, Honeywell offers a wireless door and window sensor HS3MAG1x (Single Pack) / HS3MAG2x (Twin Pack) that can be linked to your existing Honeywell wireless doorbell, and this can also be configured to provide an alert sound.