Compact Appearance, Portable Outdoors, With Shell, Sturdy And Durable With Buttons And A 0.91-Inch Oled Display With A Resolution Of 128x32 Pixels, The Display Is Clear At A Glance This Product Is Both A Natural Regulator And A Power Standing Wave Meter, Supporting The Display Of Standing Wave Values And Forward Power. This Circuit Contains A Set Of 7 Inductors And 7 Capacitors, Which Allows It To Work In A Frequency Range And Can Effectively Cover The Amateur Radio Range From 1.8mhz To 50mhz. The Maximum Current Consumption Is 400ma, The Maximum Operating Power Is 100W, And The Maximum Possible Measurement Power Is 150W 1. Allowable supply voltage range:DC10-15V 2. Maximum current consumption:400 mA 3. Maximum working power:100W 4. Maximum possible power:150W 5. Minimum power required to start tuning:5W 6. Minimum possible measurement power:0.1W 7. Measured discharge rate when the power reaches 10 watts:0.1W 8. Measurement resolution for power 10 watts:1W 9. Power measurement accuracy error:+10% 10. Maximum installed inductance:8.53H inductor 11. Minimum installation step:0.05H 12. Maximum installed capacity:1869 pF 13. Minimum capacitor installation steps:10 pF 14. Typical consumption:100-200 mA 15. Attention! The core design information of this tuner comes from the automatic tuner open source project of its author N7DDC. 16. Currently available functions include 1w start-up, 1 second screen self-extinguishing/always on, fully automatic/manual mode, etc. The default is 1w start-up, screen always on, manual/automatic switching mode. Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:Black Material:ABS Size:About 16x9cm Package Contents: 1 * Radio Communication Station Power Meter 1 * Wire 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.