Consider the following factors when choosing a timer

● The on/off switching regime: For example, in a “pulsed” NFT system, the nutrient pump may need to deliver 10-20 feeds per hour. Run-to-waste systems however, 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 number of devices being switched and the total start-up current. Note, unless relay switching is used, high current devices such as lights will require a timer that is capable of handling higher current loads.
● For safety ensure the power cord is earthed or grounded.
● Durable casing that resists corrosion and ingress of moisture.
● Easy to program.

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