PZRT 10pcs TO-220 Alumina Ceramic Sheet Ceramic Transistor Triac Thyristor Insulator Insulation Protection Mica 14x20x1mm, White
- RF Clicker, Interactive classroom aid, programmable channel - Select a channel in less than five seconds, indicating session choice - Select a channel anytime - even when a session is underway.
- Two coin cell CR2032 (3.0V) lithium batteries included.