Data Acquisition & Logging

Wireless Water Rope Sensors

The ALTA Wireless Water Rope Sensor detects the presence of water anywhere along the surface of the rope.

Description Features Configuration Application

Sensor comes with 10 feet of water rope. Additional 10 ft sections are available and can be connected up to 100 feet.

• 10 ft lead and 10 ft water detection rope

• Immediately detects water anywhere along rope

• Expandable up to 100 ft of detection rope

Principle of Operation

The ALTA Wireless Water Rope Sensor detects conductive liquids anywhere along the length of the detection rope by using two wires covered with conducting polymer. When water or conductive liquid contacts the rope, the sensor will immediately turn on the RF radio and transmit the data to the wireless gateway and iMonnit Online Sensor Monitoring and Notification System, allowing the user to immediately receive an alert by SMS text, email or voice call. The sensor rope dries quickly allowing the sensor to reset for next use. Detection rope can be expanded up to 100 feet by simply clicking additional 10 foot sections of detection rope together. Additional sections of water detection rope are available on the Monnit website.

• 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 Water Rope 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)
Water rope material					PE + alloy lead
Water rope maximum exposed temperature					75°C (167°F)
Water rope weight					30g/meter
Water rope pull force limit					60kg
Water rope core resistance					3ohm/100 meters
Water rope cable diameter					5.5mm
Water rope cable length					10 ft (120 in) included (expandable to 100 ft)
Water rope fire resistance					Second pressure plenum cable
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)
Sensor Weight					0.7 ounces

ALTA Commercial AA Wireless Water Rope 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)
Water rope material					PE + alloy lead
Water rope maximum exposed temperature					75°C (167°F)
Water rope weight					30g/meter
Water rope pull force limit					60kg
Water rope core resistance					3ohm/100 meters
Water rope cable diameter					5.5mm
Water rope cable length					10 ft (120 in) included (expandable to 100 ft)
Water rope fire resistance					Second pressure plenum cable
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 Water Rope 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 ***
Water rope material		PE + alloy lead
Water rope maximum exposed temperature		75°C (167°F)
Water rope weight		30g/meter
Water rope pull force limit		60kg
Water rope core resistance		3ohm/100 meters
Water rope cable diameter		5.5mm
Water rope cable length		10 ft (120 in) included (expandable to 100 ft)
Water rope fire resistance		Second pressure plenum cable
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

• Data center and server room water monitoring

• Document retention center monitoring

• Basement water monitoring

• Plumbing leak detection

• Boat bilge monitoring

• Storage monitoring

• Many additional applications

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