The IN-18 tube font is clear and unmutilated, and the diameter is twice that of IN14. The consistency is very good. Note: The glow tube driver needs 170DCc high voltage. Pay more attention when using it. Try not to remove the shell to prevent touching the high voltage and your body is a little paralyzed. But fortunately, the power is very small, just numb, don’t touch it by children. The bearing capacity is relatively weak. Favorite features of glow tube： 1. The number has a sense of hierarchy, the front and back are scattered, and when viewed from the side, the sense of hierarchy is extremely strong; 2. The warm orange-red light of the glow 3. The shape of the font, LED and dot matrix are not comparable to it; Product parameter： 1. Power supply: 12VDC (DC5.5*2.1) 2. Size: 187m*68m*90m (including tube height High-precision clock chip 4. GPS time calibration (support manual setting of summer time) 5.STM32 main control IC 6.4 IN-18 glow tubes Product Features： 1. Time display (12H/24H, 2 display modes, automatic saving) 2. Date display (MM-DD month day) 3. Temperature display (Celsius ℃/Fahrenheit F, automatic storage) 4. Photosensitive parameter setting 5. Alarm clock function (1 alarm clock function, automatic save) 6. Timing switch 7. Glow tube test (adjustable display 0-9 is convenient to test whether the glow tube is intact, or whether the welding is intact, the default is 0 at startup) 8. Anti-poisoning time (scanning interval time, the second is not adjustable, the program is set to scan at 30 and 31 seconds, a total of 2 seconds of scanning time, the scanning interval can be automatically saved according to the actual operation) 9. GPS time calibration (real-time monitoring of the current time and UTC time is more than one second between the update, no need to set the time zone, GPS automatically obtains data to confirm the time zone update directly (configure summer time) 10. Buzzer mode (turn off/on the buzzer, turn it on by default) 11. Intermediate bulb mode (breathing/flashing/steady on/off effect, not matched by default) 12.4 kinds of digital switching effects (automatic save) ① Gradient effect, ②Alternative change, ③Scan to the currently displayed number ④ Normal switching 13.4 kinds of mobile special effects (turn on/off mobile special effects, automatic save) after being turned on, the mobile special effects will be displayed every time the second of the time is 00, otherwise the special effects will not be displayed (the automatic switch back and forth display can also be turned on) ① One bit goes out from right to left, after it goes out, one bit from left and right lights up ②Leave the whole to the left, and then slowly appear to the left ③One digit left to the left and then two digits, then the first digit lights up to the left and then two digits ④The left one scans to leave, the right one scans to leave, the left one scans and the right one lights up after it goes out 14. RGB mode under the tube (can turn on/off the display, automatically save data) ①One color (7 colors can be switched, brightness can be adjusted) ② Breathing effect (the brightness of breathing is adjustable, whether it is automatically switched, the default is automatic switching ③Random color (the number displayed on the tube changes once and changes the color once) ④Towing gradient color ⑤Close the display