JZROCKER Voltages Resistance Reference Module 1.24V/2.5V/7.5V/5V/10V 5 Speed 100R/1K/10K/100K Reference Multimeter Calibration

<br> <b>Features:</b><br> Specially Voltages reference module, it use low-temperature drift components, Type C 5V port as power supply, use filter to make the power supply purer and smoother, not need battery to supply power.<br> Used to verifies the accuracy of handheld 3-1/2 digital multimeters.<br> Used to verifies the accuracy of handheld 4-1/2 digital multimeters, must keep the same temperature and humidity as the data sheet specified.<br> The pull switches can only keep ON each time, not two ON allowed at the same working time.<br> If you like to verifies the accuracy of handheld 4-1/2 digital multimeters, try to keep the same temperature and humidity as the data sheet specified.<br> Try to verifies in a low air flows environment, try to avoid direct cold winding from the air conditioners as it may cause some additional errors.<br> <br> <b>Specifications:</b><br> Size:Approx.8.5x5.50cm/3.35x2.17inch<br> <br> <b>note:</b><br> 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. <br> 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.<br> <br> <b>Package Includes:</b><br> 1Pc Voltages Reference Module<br>

• Specially Voltages reference module, it use low-temperature drift components, Type C 5V port as power supply, use filter to make the power supply purer and smoother, not need battery to supply power.
• Used to verifies the accuracy of handheld 3-1/2 digital multimeters.
• Used to verifies the accuracy of handheld 4-1/2 digital multimeters, must keep the same temperature and humidity as the data sheet specified.
• The pull switches can only keep ON each time, not two ON allowed at the same working time.
• If you like to verifies the accuracy of handheld 4-1/2 digital multimeters, try to keep the same temperature and humidity as the data sheet specified.