Features: Suitable for FT-817/857/897 and other models, fully for the original TCXO-9 Crystal module for temperature compensation, with cost-effective, and very practical Small size, easy to carry and store, easy to use and with good performance Specifications: Item Type: Temperature-Compensated Crystal Module Accuracy: 0.5 PPM Frequency: 22.625 MHz Material: Printed Circuit Board Installation Method: Turn off the power of the machine, open the cover of the machine, find the installation position of the temperature compensation crystal, you need to pull the ordinary crystal of the machine belt, and then you can install the inserted spindle- according to the alignment mode, and you can install and use it after starting without any adjustment. Note: Light shooting 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 0-3cm. Package includes: 1 x Temperature-Compensated Crystal Module