ALTA® Wireless Water Detection Sensors – Detect Leaks Instantly Anywhere

The ALTA® Wireless Water Detection Sensors offer reliable leak and flood monitoring using industry-leading wireless technology. These sensors immediately alert you when water is present—helping prevent costly damage in data centers, warehouses, buildings, or remote infrastructure.

Choose from:

• Detect Sensor: Uses a bare-wire lead to sense water contact.

• Detect+ Sensor: Features a durable stainless steel probe.

• Water Detection Puck: Compact, waterproof, and submersible—great for hard-to-reach or fully wet areas.

With flexible lead lengths from 0.9m to 30m and real-time monitoring via the iMonnit cloud platform, ALTA sensors provide peace of mind across residential, commercial, and industrial environments.

Note: Requires a Monnit gateway and, in some cases, software to operate. Visit our Software/Gateway section or explore our complete sensor kits.

Key Features:

• Instant water detection alerts

• Multiple configurations:

  • Lead Options: 0.9 m (3'), 3 m (10'), 7.5 m (25'), 15 m (50'), 30 m (100')

  • Sensor Options:

    • Detect: Bare-wire

    • Detect+: Stainless steel probe

    • Puck Sensor: Waterproof and submersible

• Compact and easy to install

• Ideal for wet areas, critical equipment, or water-sensitive zones

• Works with iMonnit for remote alerts and data logging

Category Specification Detection Requirements   Input Impedance 2.5 MΩ Maximum Medium Impedance 900.0 kΩ (Clean water typical range: 50 to 200 kΩ) Water Rope   Cable Length 3 meters (10') included, expandable to 30 meters (100') Material PE + alloy lead Cable Diameter 5.5 mm Weight 30 g/meter Pull Force Limit 60 kg Maximum Exposed Temperature 75°C (167°F) Core Resistance 3 Ω/100 meters Fire Resistance Second pressure plenum cable Detect Lead   Standard Cable Length 0.9 m (3 ft); Optional: 3 m (10'), 7.5 m (25'), 15 m (50'), 30 m (100') Wire Count 2-conductor (red/black) Wire Gauge 22 AWG Conductor Material Stranded Copper 7/30 Insulation PVC, 0.010" Tinning Tips Silver (Ag) Solder Jacket PVC (black) Overall Diameter 4.2 mm (0.164") Ratings / Approvals NEC (UL) Type CM, UL AWM Style 2464, CSA AWM FT4, RoHS Temperature Rating -20°C to 60°C (-4°F to 140°F) Voltage Rating 300 V Max Dielectric Strength 1500 V RMS Detect+ Probe   Electrode Composition Stainless Steel 304 Probe Casing ABS Plastic Lead Composition Same as Detect Lead above Puck   Dimensions 75 mm (diameter), 25 mm (height), 30 mm (height with rubber feet) Enclosure Material Vulcanized rubber Water Protection Completely sealed, waterproof, fully submersible Water Detection Minimum Height 1.6 mm (1/16") Weight 7.6 ounces Battery 3.6V 750 mAh Lithium (non-replaceable) Expected Battery Life 10 years at a 10-minute Heartbeat Operating Temperature Range -40°C to 85°C (-40°F to 185°F) ALTA Wireless Features   Data Logging Logs 2000–4000 readings if gateway connection is lost (non-volatile flash, persists through power cycling): - 10-minute Heartbeats = ~22 days - 2-hour Heartbeats = ~266 days Wireless Protocol ALTA Proprietary Frequency-Hopping Spread Spectrum (FHSS) Wireless Transmission Power 50 mW (900 MHz), 25 mW (868 MHz), 10 mW (433 MHz) Wireless Range 2,000+ ft. through 18+ walls with the ALTA XL® Gateway Security Encrypt-RF® (256-bit key exchange and AES-128 CTR) General Specifications   Battery Voltage Range 2.0 to 3.8 VDC Operating Altitude -15.2 to 1,982 m (-50 to 6,500 ft) Storage Altitude -15.2 to 3,048 m (-50 to 10,000 ft) Operating Humidity 5 to 85% RH (non-condensing) Certifications   900 MHz Sensors FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1 868 and 433 MHz Sensors EN 55032:2015/A11:2020; EN 55035:2017/A11:2020; ETSI EN 300 220 V3.2.1 (2018-06); ETSI EN 301 489-3 V2.2.0 (2021-11); ETSI EN 303 645

Please See the Below: 

Data Sheet-Rope

Data Sheet - Detect/ Detect+

Data Sheet - Puck 

General Sensor Guide 

 

Example Applications:

• Current monitoring
• Current usage
• Amperage monitoring
• Amp-hour metering
• More

Monnit Gateways can connect with up to 100 sensors per gateway and transmit data to the cloud. The iMonnit Software platform provides access to data on any PC or mobile device, enabling dashboard views and email or SMS alerts.

 

See our Gateways and Software Options Below: 

Gateways 

Software