- iron
- Piezo sensor: can be used as an acoustic sensor for voice-controlled electronic products.
- Piezo sensor 20mm: features voice legible, contactless, thin and light.
- Piezo transducer 20mm: great for box guitars, acoustic guitars, electronic drum triggers, buzzers, and also used for watches, cameras, phones, electronic toys, computer.
- Piezo sensor electronic drum: made of superior iron, temperature resistant, ,.
- Buzzer: low voltage and low power consumption.