Klein Tools MM300 Digital Multimeter + ET300 Digital Circuit Breaker Finder Klein Tools electrical testing set including MM300 Digital Multimeter and ET300 Digital Circuit Breaker Finder Transmitter. The MM300 is a manual-ranging digital multimeter for measuring AC/DC voltage, DC current, resistance, continuity, and battery testing. Includes: Klein Tools MM300 Digital Multimeter Klein Tools ET300 Circuit Breaker Finder Transmitter Cable/accessory shown in photos Please review photos carefully for exact items included and cosmetic condition. SKU: N72307