The PT2125 is a fan controller that adds two toggle outputs for swing‑head control, rhythm wind and buzzer functions to the PT2124 family. It supports CMOS technology, a 4‑step timer scale, 3‑state wind speed, and optional middle‑wind start‑up.
The manual provides a full pin configuration (20‑pin DIP), application circuit diagrams, parts lists with values, power‑supply guidelines, and ordering part numbers for the various package options.
| Technology | CMOS |
|---|---|
| Timer scale | 4‑step |
| Wind speed states | 3 |
| Middle wind start‑up time | 2 seconds |
| Toggle inputs/outputs | 2 sets |
| Buzzer function | Yes |
| Countdown timer control | Auto with LED display |
| Base frequency input | 32768 Hz or 50/60 Hz |
| Package type | 20‑pin DIP |
It adds two toggle outputs for swing‑head control, rhythm wind and buzzer functions to the PT2124.
The controller can use either a 32 768 Hz crystal or a 50/60 Hz AC line frequency as its base input.
The device is supplied in a 20‑pin DIP package.
The 20‑pin DIP version is listed as PT2125‑F4N‑RNM2.