When selecting sensors and meters for outdoor use in integrated HVAC-irrigation systems, it’s essential to consider factors such as durability, weather resistance, and environmental factors. Look for sensors and meters with IP67 or higher ratings for protection against dust and water ingress. Additionally, consider the operating temperature range, UV resistance, and corrosion protection to ensure the devices can withstand harsh outdoor conditions. It’s also crucial to select devices with adequate lightning protection and surge immunity to prevent damage from electrical storms.