by The Leading Enterprise Internet of Things Solution Wireless Low Temperature Sensors General Description Features of Monnit ALTA Sensors The ALTA Wireless Low Temperature Sensor uses Wireless range of 1,200+ feet through 12+ walls * a glass coated platinum RTD sensor to accurately Frequency-Hopping Spread Spectrum (FHSS) measure temperatures from -200C to +162C Improved interference immunity (-328F to +325F). Improved power management for longer battery life ** (12+ years on AA batteries) Standard accuracy at 0C: +/- 3.3C Encrypt-RF Security (Diffie-Hellman Key Exchange + Calibrated accuracy at 0C: +/- 0.5C AES-128 CBC for sensor data messages) Temperature range: -200C to +162C Datalogs 2000 to 4000 readings if gateway connection (-328F to +325F) is lost (non-volatile flash, persists through the power cycle): - 10-minute heartbeats = ~ 22 days - 2-hour heartbeats = ~ 266 days Principle of Operation Over-the-air updates (future proof) Free iMonnit basic online wireless sensor monitoring The ALTA Wireless Low Temperature Sensor outputs and notification system to configure sensors, view the ambient temperature in degrees Celsius or data and set alerts via SMS text and email Fahrenheit. It is programmed to sleep for a user-given time interval (heartbeat) and then wakeup, power Actual range may vary depending on environment. * up the RTD sensor and wait for it to stabilize then Battery life is determined by sensor reporting ** mathematically compute the temperature and transmit frequency and other variables. Other power options the data to the gateway. are also available. Industry leading 25 month NIST certified product Wireless Range Comparison included on leaded temperature sensors. Wireless Range Comparison The ALTA Low Temperature Sensor is not meant Monnit ALTA for wet, damp, high humidity environments. This sensor should only be operated in dry, low humidity environments. Should you need a temperature sensor that operates at extreme temperatures and can Monnit withstand getting wet or condensed on, please consider our Thermocouple Sensors. Other Wireless Platforms Example Applications Wifi Environmental monitoring Smart machines & smart structures HVAC operation & testing Many additional applications Bluetooth PAGE 12.470 2.470 4.375 1.111 3.295 1.111 ALTA Commercial AA Wireless Low Temperature Sensor Technical Specifications Supply voltage 2.03.8 VDC (3.03.8 VDC using power supply) * Current consumption 0.2 A (sleep mode), 0.7 A (RTC sleep), 570 A (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode) Operating temperature range (board circuitry and batteries) -18C to 55C (0F to 130F) using alkaline -40C to 85C (-40F to 185F) using lithium Optimal battery temperature range (AA) +10C to +50C (+50F to +122F) RTD temperature range (RTD and cable only) -200C to +162C (-328F to +325F) Accuracy 0C +/- 3.3C Standard (+/- 0.5C Calibrated) ** Dissipation constant 2mW/C Thermal time constant 15 sec max Datalogging Datalogs 2000 to 4000 readings if gateway connection is lost (non-volatile flash, persists through the power cycle): - 10-minute heartbeats = ~ 22 days - 2-hour heartbeats = ~ 266 days Wireless range 1,200+ ft non-line-of-sight Security Encrypt-RF (256-bit key exchange and AES-128 CTR) Weight 3.7 ounces Certifications 900 MHz product FCC ID: ZTL-G2SC1 and IC: 9794A- G2SC1. 868 and 433 MHz product tested and found to Industry comply with: EN 300 220-2 V3.1.1 (2017-02), EN 300 220-2 Canada V3.1.1 (2017-02) and EN 60950 Hardware cannot withstand negative voltage. Please take care when connecting a power device. * See RTD accuracy chart on last page. ** *** The ALTA Low Temperature sensor is not meant for wet, damp, high humidity environments. Power Options The standard version of this sensor is powered by two replaceable 1.5 V AA sized batteries (included with purchase). This sensor is also available with a line power option. The line powered version of this sensor has a barrel power connector allowing it to be powered by a standard 3.03.6 V power supply. The line powered version also uses two standard 1.5 V AA batteries as backup for uninterrupted operation in the event of line power outage. Power options must be selected at time of purchase, as the internal hardware of the sensor must be changed to support the selected power requirements. PAGE 2