UPGRADED K2-B Deluxe EMF Meter with Built-In Constant On-Off Switch and LOW VOLUME SOUND, includes instructions. Offers the same effectiveness and power as the original K2 meter. Widely used in numerous investigations with reliable results. This model provides an ble low volume sound when EMF is detected. The sound is intentionally low to avoid interference during investigations. The tone resembles a subtle clicking similar to a Geiger counter and increases in intensity as each detector bar lights up. Please note the sound level remains 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 ble alert for EMF detection. This feature allows users to both see the illuminated LEDs and hear the EMF changes simultaneously. It enables real-time awareness of EMF fluctuations, which can be useful during monitoring. The ble feedback may also be captured by o or video recording devices, supporting documentation of environmental changes. Ideal for detecting EMF variations in remote or dark environments. The ble signal increases in frequency with rising EMF field strength. Commonly used by professional investigative teams. A reliable choice for those seeking a quality EMF meter trusted in the field. Electromagnetic fields (EMFs) are emitted by various electrical sources including appliances, wiring, and electronic devices. The K-II EMF meter measures these fields across five milliGauss ranges, helping identify areas of elevated EMF exposure. The device operates on a single 9V battery. 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