is a specially designed voltage reference module, it uses low-temperature drift components, Type C 5V port as power supply, uses EMI filter to make the power supply purer and smoother, no need battery to supply power.
Product Name: voltage reference module
No-load power consumption: 45mA
Power supply: Type C 5V port, 0.5A
Power supply indication: Green LED light
Clear box size: 85X55X25mm
Reference Voltage: 1.24V/2.5V/7.5V/5V/10V 5 levels.
Reference Resistance: 10/100/1K/10K/100KΩ 5 levels.
Resistor's material: 0.1%Metal film copper feet&TCR:25PPM
Package net weight: 34g

Working environment: 16-30℃ RH≤70%

Product Usage:
1. Used to verify the accuracy and linearity of handheld 3 1/2 digital multimeters.
2. Used to verify the accuracy and linearity of handheld 4 1/2 digital multimeters, must keep the same temperature and humidity as the data sheet specified.
Caution:
1. The pull switch can only keep one ON each time, no two ON allowed at the same working time.
2. If U like to verify the accuracy and linearity of handheld 4 1/2 digital multimeters, try to keep the same temperature and humidity as the data sheet specified.
3. Try to verify in a low air flow environment, try to avoid direct cold wind from the air conditioner as it may cause some additional errors.