The most recent generation of Panasonic PIR sensors incorporates a smooth lens surface that uses 64 zones for detection. The EKMC series is recommended for wall powered applications as this is the lowest cost Panasonic PIR sensor available. The EKMB series is Panasonic’s best option for battery powered devices where low power consumption is desired. The EKMB type uses a high end low current amplifier design and achieves low current consumption with 1, 2, and 6 µA options available. Using a coin cell battery, this sensor has an expected battery life of approximately six years.