Monnit Vibration Meters use an accelerometer to measure g-force on 3 axes and then determines speed and frequency from this measurement. The sensor measures vibration once every Measurement Interval, which can be set as low as 1 minute and as high the Heartbeat Interval. The sensor is designed to measure continuous vibration and be low powered so it captures vibration for less than a second during its Measurement Interval. The sensor uses a Sensitivity Threshold to filter noise or low level vibrations. If this threshold is set to 0 then any vibration captured during the Measurement Interval will contribute to the duty cycle and will be analyzed, even very low level vibrations. The Vibration Meter will also report the duty cycle, or how long the sensor was measuring vibrations throughout the heartbeat.
Monnit MNS2-9-W2-AC-VM Features1,200+ foot range12+ year battery life80+ wireless sensorsBank-level AES securityUp in 15 easy setupGlobal ready (900, 920, 868 & 433 MHz)
Accelerometer SpecificationsSpeed Measurement Range: 0 to 25.5 mm/sSpeed Measurement Resolution: 0.1 mm/sFrequency Measurement Range: 0 to 256 HzFrequency Measurement Resolution: 1.5625 Hz rounded down to nearest 1 HzVibration Intensity Threshold Range: 0 to 1.701 gVibration Intensity Threshold Resolution: 0.063 gWeight: 3.7 oz.
Variation SpecificationsSecurity: Encrypt-RF® (256-bit key exchange and AES-128 CTR)
ALTA AA SpecificationsBattery Type: 2 Replaceable AA 1.5 V BatteriesDimension: 4.375 in x 2.470 in x 1.12 inSupply Voltage: 2.0 - 3.8 V (2 x AA 1.5V Batteries or Optional Power Supply)Battery Life: At 1 hour heartbeat setting, AA batteries will last up to 10 years.**Max Operating Temperature Using AA Alkaline: -18°C to 55°C (0°F to 130°F)Max Operating Temperature Using AA Lithium: -40°C to 60°C (-40°F to 140°F)Optimal Battery Operating Temperature: +10°C to +50°C (+50°F to +122°F)Enclosure Material: ABS
ALTA 900 MHz SpecificationsOperating Frequency: 900 MHz Operating FrequencyCertifications: Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-G2SC1)Complies with Industry Canada standards. (IC: 9794A-G2SC1)Device Range: Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*Security: Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)