Features:
1. Multi functional test pen, compact and compact in size
2. Crystal pen body, beautiful and hard, not easily broken
3. Indicator light design: Adopting an indicator light design, the presence or absence of current is clear at a glance.
4. Bidirectional design: One character cross switch, one stroke multi-purpose
5. Wide application range: applied in various scenarios such as home, industry, power, factory, maintenance, etc., it can be operated by electricians, electronics enthusiasts, and ordinary users.