Explore and measure electromagnetic signals with the ATR-FSM Portable Field Strength Meter. Covering 0.5MHz–5GHz with a +50dBm to -70dBm sensitivity range, it features approximately 20× attenuation and 20× gain switching for monitoring both strong and weak signals. The 1.8-inch full-color display offers digital, pointer, curve, and recorder modes for easy signal analysis. Compact and lightweight with an 800mAh rechargeable battery and USB Type-C charging, it’s ideal for antenna testing, signal comparison, interference troubleshooting, and electromagnetic environment assessment. The included 433MHz antenna is intended for 433MHz testing; other frequencies require a suitable antenna.
