Instant purchase OK. Multiple available. Please comment if you'd like one. A chip-type 3-axis accelerometer sensor ADXL-335 has been soldered onto a board and made into an easy-to-use module. Since it has an analog voltage output, acceleration can be measured as voltage. Specifications: ・Measurement Range: ±3g ・Sensitivity: 300mV/g (when powered by 3V) ・0 (zero) g output: 1.5V (when powered by 3V) ・Power Supply Voltage: DC3V (Operating Range: DC1.8V ~ DC3.6V) Please feel free to comment if you have any questions or concerns.