This year has entered the era of pd decoy. Testing pd power supply has always been a difficult problem due to pd decoys alone. This problem has finally been solved. Ledri has launched a pd decoy, which brings convenience to the test. Shenzhen Lederui Technology Co., Ltd. is an innovative integrated circuit design company. The core team has more than 10 years of experience in integrated circuit design, focusing on the design of special integrated circuits for mobile phone peripheral products. Products include Type-c interface CC logic control chips , USB PD protocol control chip, special chip for mobile power supply, etc.
This LDR-PD02 decoy also comes with a transparent shell, which is no longer a bare board.
Translucent shell, the PCB inside is faintly visible.
Compared with a one-yuan coin, the volume is not much larger than a one-yuan coin.
The decoy does not have a male connector. One end is a type-c female connector. The pd protocol is currently a type-c interface. When using it, you need to connect a cc line. The A to C line is not suitable.
The other is a USB-A female socket, which can be connected to the meter to see the voltage, or directly wired for charging, or connected to the load to test the power. 
On the back of the decoy, there seems to be Ledary's logo in the middle. 
As you can see on the back, it turns out that Ledary started to have a pd decoy in 2015. At that time, it seemed that there was no pd power supply. It can be seen that the development was very early. 
Test 5 pd power supplies to be tested, unified single port type-c interface. 
From left to right are Apple 29W (A1540), Apple 87W (A1719), Green Alliance 30W (CD127), Huawei (HW-59C200CHPQ1), LeTV (EV-24ACN). 
Pd deception test
Explain that directly plugging in the decoy will automatically display the voltage, from low to high, the decoy is completed and stays at the highest voltage. You can switch manually at any time by pressing the button. The following test is to manually block the voltage
Apple 87W (A1719) voltage is printed On the other side, you can see that there are three sets of voltages of 20.2V, 9V, and 5.2V.
5V pay attention to the color of the decoy lamp, different voltages are different colors.
9V 
20.01V
Zimi No. 10 decoy, 20V. 
The PD voltage tester of Lederui has a very convenient PD decoy function, and the response is very fast. Insert the default automatic test voltage, press the button to switch the voltage manually, deceive the voltage for power test, or use different voltages to charge the electrical appliance, single-function PD decoy , Does not support QC deception, it is more convenient to connect to the meter, it may be difficult to judge when looking at the lights, and it is small and convenient to test, bringing a new pd experience. Reminder, if you directly charge the phone with the current decoy voltage, you need to use it with caution. This positioning is a pd decoy function, and it can be used with the flying dragon watch to check the voltage before charging.
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After the LDR-PD02 tester is plugged into the adapter, it will indicate the current voltage range through the R/G/B three-color light. According to the voltage range provided by the adapter, it can provide one to seven levels, and the red is the first level. Green is the second gear, blue is the third gear, yellow (red and green) is the fourth gear, purple (red and blue) is the fifth gear, cyan (blue and green) is the sixth gear, and white (red and green) is the sixth gear. Green and blue) is the seventh gear.
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You can switch between the above seven gears by pressing the button (the adapter can provide several gears, and it will switch between the provided gears)