General Description
It is intended for use on battery or other DC sources, up to 50 Volts. Not intended for use with AC Voltages. It is perfect for batteries, adapters, solar equipment, vehicles or machinery, and any other electrical appliance monitoring. The sensor triggers on voltage presence to voltage Absence and vice versa. The data is displayed as “Voltage Detected” or “No Voltage”.
• Detects presence or absence of Voltage
• Voltage presence detected above ~0.47 Volts
• Voltage absence detected below ~0.47 Volts
• Detects voltages up to 50 Volts
• Reverse voltage protection, up to 50 Volts
Principle of Operation
The ALTA DC Voltage Detector detects the presence or absence of voltage. The sensor triggers on voltage presence to voltage absence and vice versa. The data is displayed as “Voltage Detected” or “No Voltage”. If no change is observed within the heartbeat interval, the state is continuously reported on the heartbeat interval. Transitions and heartbeat data is logged into a cloud service. The user can set the system to send an alert on either state, or on the transition of states.
Features of Monnit ALTA Sensors
• Wireless range of 1,200+ feet through 12+ walls *
• Frequency-Hopping Spread Spectrum (FHSS)
• Improved interference immunity
• Improved power management for longer battery life **(12+ years on AA batteries)
• Encrypt-RF® Security (Diffie-Hellman Key Exchange+AES-128 CBC for sensor data messages)
• Onboard data memory stores up to 512 readings per sensor:
– 10-minute heartbeats = 3.5 days
– 2-hour heartbeats = 42 days
• Over-the-air updates (future proof)
• Free iMonnit basic online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email
*Actual range may vary depending on environment.
**Battery life is determined by sensor reporting frequency and other variables. Other power options are also available.
ALTA Commercial Coin Cell Wireless DC Voltage Detection Sensor | Technical Specifications
| Supply voltage | 2.0–3.8 VDC * | ||||
| Current consumption | 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (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 coin cell) | -7°C to +60°C (20°F to +140°F) ** | ||||
| Optimal battery temperature range (coin cell) | +10°C to +50°C (+50°F to +122°F) | ||||
| Maximum rated input voltage | 50.0 Volts*** | ||||
| Minimum rated input voltage | -50.0 Volts | ||||
| Voltage detection threshold | Present above ~0.47 Volt, Absent below ~0.47 Volt | ||||
| Trigger | Transmits data upon state change | ||||
| Open circuit reading | Voltage absent | ||||
| Leaded wire specification | 2 Wires, 1 ft (12 in), Red (+), Black (-), 18 AWG | ||||
| (Custom lengths available upon request) | |||||
| Integrated memory | Up to 512 sensor messages | ||||
| Wireless range | 1,200+ ft non-line-of-sight | ||||
| Security | Encrypt-RF® (256-bit key exchange and AES-128 CTR) | ||||
| Weight | 0.7 ounces | ||||
ALTA Commercial AA Wireless DC Voltage Detection Sensor | Technical Specifications
| Supply voltage | 2.0–3.8 VDC (3.0–3.8 VDC using power supply) * | ||||
| Current consumption | 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (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) | -18°C to 55°C (0°F to 130°F) using alkaline | ||||
| -40°C to 85°C (-40°F to 185°F) using lithium ** | |||||
| Optimal battery temperature range (AA) | +10°C to +50°C (+50°F to +122°F) | ||||
| Maximum rated input voltage | 50.0 Volts*** | ||||
| Minimum rated input voltage | -50.0 Volts | ||||
| Voltage detection threshold | Present above ~0.47 Volt, Absent below ~0.47 Volt | ||||
| Trigger | Transmits data upon state change | ||||
| Open circuit reading | Voltage absent | ||||
| Leaded wire specification | 2 Wires, 1 ft (12 in), Red (+), Black (-), 18 AWG | ||||
| (Custom lengths available upon request) | |||||
| Integrated memory | Up to 512 sensor messages | ||||
| Wireless range | 1,200+ ft non-line-of-sight | ||||
| Security | Encrypt-RF® (256-bit key exchange and AES-128 CTR) | ||||
| Weight | 3.7 ounces | ||||
ALTA Industrial Wireless DC Voltage Detection Sensor | Technical Specifications
| Supply voltage | 2.0–3.8 VDC (3.0–3.8 VDC using power supply) * | ||||||
| Current consumption | 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (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 battery) | -40°C to +85°C (-40°F to +185°F) ** | ||||||
| Included battery | Max temperature range | -40° to +85°C (-40° to +185°F) | |||||
| Capacity | 1500 mAh | ||||||
| Optional solar feature | Solar panel | 5VDC/30mA (53mm x 30mm) | |||||
| Charging temperature range | 0° to 45°C (32° to 113°F) | ||||||
| Max temperature range | -20° to 60°C (-4° to 140°F) | ||||||
| Included rechargeable battery | 600 mAh/>2000 charge cycles (80% of initial capacity) | ||||||
| Solar efficiency | Optimized for high and low-light operation *** | ||||||
| Maximum rated input voltage | 50.0 Volts**** | ||||||
| Minimum rated input voltage | -50.0 Volts | ||||||
| Voltage detection threshold | Present above ~0.47 Volt, Absent below ~0.47 Volt | ||||||
| Trigger | Transmits data upon state change | ||||||
| Open circuit reading | Voltage absent | ||||||
| Leaded wire specification | 2 Wires, 1 ft (12 in), Red (+), Black (-), 18 AWG | ||||||
| (Custom lengths available upon request) | |||||||
| Integrated memory | Up to 512 sensor messages | ||||||
| Wireless range | 1,200+ ft non-line-of-sight | ||||||
| Security | Encrypt-RF® (256-bit key exchange and AES-128 CTR) | ||||||
| Weight | 4.7 ounces | ||||||
| Enclosure rating | NEMA 1, 2, 4, 4x, 12 and 13 rated, sealed and weather proof | ||||||
| UL rating | UL Listed to UL508-4x specifications (File E194432) | ||||||
Example Applications
• Battery Power
• Relays/Switches
• Appliances
• Adapters
• Solar
• Power Supplies
• Sump Pumps
• Many additional applications
© Copyright 2019 Matt Solutions Ltd. All Rights Reserved.
