What kind of electrical meter do I need for landscape and irrigation?

Get the most basic meter you can, as long as it does what you need:

• Just checking batteries, clock volts or solenoid resistance: use a basic multimeter like the Pro30™,
• Measuring different electrical things like resistance, low or high voltage, and low or high current without much experience with meters: use an automatic meter like the Pro90™,
• Measuring a wide range of electrical currents with unusual characteristics (LEDs, decoders): use a sensitive true RMS meter like the Pro93™ or Pro95™.