1. The signal source is generated by a quartz crystal, which is extremely stable in frequency.
2. Contactless, long life, will not be damaged because of long whistle time.
3. Good sound quality, unaffected by vibration, low temperature, high temperature, humidity, and voltage.
4、Multiple voices, up to 22.
5. Permanently retain the user-set sound, no fear of power outage.
6. Installation is simple, with a single wire to control the conversion of various sounds, without any additional accessories, and without adding any trouble to the installation work.
7. Adapts to a wide temperature environment, -40 degrees to +50 degrees.
8. Since the horn button current is extremely small, a horn relay is not necessary, protecting the horn switch.

9. Eco-friendly green products with good sound quality and low electromagnetic radiation.

High-tech patent products with microcomputer as the core, feature contactless operation, excellent sound quality, stable frequency, long service life, multiple sound settings, permanent memory that is unaffected by power outages, convenient installation, easy operation, stable and reliable performance, exquisite craftsmanship, and meet national standards and industry standards in all technical indicators.