UPGRADED K2-B Deluxe EMF Meter with Built-In Constant On-Off Switch and Low Volume Sound – Includes Instructions. This model offers the same effectiveness and power as the original K2 meter. These units have been used in numerous investigations with reliable results.NOTE: This is a KII meter that provides an audible low volume sound when EMF is detected. The sound is intentionally low to avoid interference during investigations. The low volume output resembles a Geiger counter, increasing in intensity as each detection bar lights up. Please note the sound level is kept low to prevent disruption of evidence collection. All other specifications and operating functions are consistent with standard KII meters.Model: KII-B The KII-B builds upon the popular KII design by adding a low volume audible alert when EMF is detected. This feature allows paranormal investigators to both see the illuminated LEDs and hear the detection signal simultaneously. Unlike standard KII models, this version enables users and team members to physically hear EMF changes as they occur. The audible feedback can also help support findings, as recording devices may capture the sound for later review. Provides an effective audible alert for monitoring EMF changes from a distance. The audible tone increases in frequency with rising EMF field strength.This is the type of EMF meter used by professional investigation teams, including those featured on television programs such as "Ghost Hunters." For a dependable and widely recognized EMF meter, this model is a practical choice.Electromagnetic fields (EMFs) are emitted by various electrical sources, including appliances, cell phones, wiring, and electronic devices. The K-II EMF meter measures these fields and identifies sources of elevated emissions, helping users make informed decisions about exposure. The device operates on a single 9V battery and displays EMF levels across five milligauss ranges.Features: - Instant response to EMF fluctuations and spikes - Detects ELF range (50 to 1,000 Hz) and VLF range (1,000 to 20,000 Hz) - Simple push-on/push-off operation - Easy-to-read multi-segment LED display - Accuracy of ±5% at 50–60 Hz