What is the base of your irrigation system?
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The Watts TK-99D hand-held digital test kit is an advanced test
instrument designed to test PVB'S, SVB'S, DCVA'S, DCDA'S,
RP'S, and RPDA'S. The TK-99D features a high contrast LCD
display with a large 5/8" height Differential Character. This compact
test kit features .25% Full Scale Accuracy in addition to a
low battery indicator and an automatic shutdown feature to conserve