SparkFun Analog Panel Meter - 0 to 5 VDC General Shops It transforms the TT850/TT860 into

It transforms the TT850/TT860 into a wireless flash with remote power control

1N4004 Reverse Protection Diode

This is a 1A Adjustable SOT-223 voltage regulator capable of outputting 1

but they aren’t incredibly accurate

Quickstart Guide

SparkFun Analog Panel Meter - 0 to 5 VDC General Shops It transforms the TT850/TT860 intoThis analog panel meter measures DC voltage from 0 5 volts with 2. 5% accuracy. It has a clear and easy to read scale and an adjustable dial. These come in handy for measuring the output of sensors with 5V ranges. The face of the meter is 45x45mm overall. The mounting hole should be 38mm. The overall depth of the meter is 35mm. Documents: Product Sheet