1. Fitment: EWS3 EWS4 test platform replacement for EWS Programmer, test platform can work with all rechargeable keys. 2. Test for PCF7935 Or EML: EWS test platform is to test whether the PCF7935 chip or EML electronic chip key complete programming or not. 3. Test Items Working State: to test EWS3, EWS4 working or not, test EML key electronic chip working or not, and test after fixing EWS data. 4. Easy to Use: Simple to operate, plug and play, no modification required, no complicated operations, convenient and easy to use. It can perform 3 functions as follows without connecting for : 1, to test EWS3, EWS4 working or not 2, to test whether the PCF7935 chip or EML electronic chip key complete programming or not. 3, to test EML key electronic chip working or not, and test after fixing EWS data. How to use? As shown in the following picture, connect the EWS3 / EWS4 with the Test Platform, and supply 12V power for the device, you see the white indicator flashes, it indicates EWS3 is working well; after the EWS4 is supplied with 12V power, you see the indicator light fast flash, it indicates EWS4 is working well. After supplying the power but you can't see the white indicator flashes, it indicates EWS can't work well, please check whether 0D46J or 2D47J is not welded well, or maybe EWS is damaged, if it is so you could buy a used EWS and fix it by writing data. Put the programmed PCF7935 chip or EML electronic chip key near the middle of the test platform, and wait for 3 to 5 seconds, you hear the relay in the EWS3 or EWS4 make a sound when working and see the red indicator flashes, it indicates the chip programming complete. Colour:White & Green Material:PCB The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 * EWS3 EWS4 Test Platform Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.