RBoy
(www.rboyapps.com - Making SmartThings Easy!)
2
Ecolink sensors have an excellent response time, see this benchmark table I whipped up some time ago:
Sometimes it’s not just the sensor at play but the Z-Wave mesh. Do you have Z-Wave repeaters around? How far is the hub from your sensor. These things also have a play in the response time.
BTW, it always helps to just reboot the hub once in a while and you see an improved response time.