When
choosing a timer consider the following:
+
The on/off switching regime. For example, when switching a
nutrient pump, “pulsed” NFT systems may require 10-20 feeds per hour
whereas run-to-waste systems typically require only 1-6 feeds per day,
each of around 1-2 minutes duration. Refer to our
Feed Frequency & Volume Guide for
advice on this point.
+
The device being switched.
Lights, for example, will require a timer that is capable of handling
higher current loads.
+
Earthed (or grounded) power cord.
+
Durable casing that resists corrosion and ingress of moisture.
+
The number of devices being
switched.
+
Easy to program.
