The Dragino LWL04 is a freestanding LoRaWAN water leak sensor with three height-adjustable metal posts. Simply place it on the ground in basements, kitchens, or equipment rooms — no mounting required — and it triggers a short-circuit alarm uplink when water bridges the posts.

Key specifications

• Three height-adjustable bottom posts; alarm only when water bridges the posts
• CR123A 1500 mAh battery for 16,000–70,000 uplinks (2–10 years)
• IP65 waterproof enclosure; magnet activation with LED indication
• LoRaWAN Class A v1.0.3; uplink on event plus daily periodic reports
• Counts leak events and calculates last leak duration
• Wireless OTA firmware updates; downlink configuration; 104 × 104 × 33 mm

This US915 variant registers to any standard LoRaWAN network server with its preloaded OTAA keys.