I bought 3 of them, supposed to be blue, turned out to be green! I want them for low voltage measurement (1-4Vdc), that's why I picked those with 3 wires. Power supply is 5Vdc, e.g. signal in 1.78Vdc - measures 1.56Vdc, signal in 1.28Vdc - measures 1.12Vdc (as in photo), more than 10% error. At 5Vdc in things get better, 4.85Vdc reading. So, avoid or compensate low voltage measurements. Other than that, bright and readable. 4 stars for wrong color in order and accuracy.

I bought 3 of them, supposed to be blue, turned out to be green! I want them for low voltage measurement (1-4Vdc), that's why I picked those with 3 wires. Power supply is 5Vdc, e.g. signal in 1.78Vdc - measures 1.56Vdc, signal in 1.28Vdc - measures 1.12Vdc (as in photo), more than 10% error. At 5Vdc in things get better, 4.85Vdc reading. So, avoid or compensate low voltage measurements. Other than that, bright and readable. 4 stars for wrong color in order and accuracy.

I bought 3 of them, supposed to be blue, turned out to be green! I want them for low voltage measurement (1-4Vdc), that's why I picked those with 3 wires. Power supply is 5Vdc, e.g. signal in 1.78Vdc - measures 1.56Vdc, signal in 1.28Vdc - measures 1.12Vdc (as in photo), more than 10% error. At 5Vdc in things get better, 4.85Vdc reading. So, avoid or compensate low voltage measurements. Other than that, bright and readable. 4 stars for wrong color in order and accuracy.