



Safety & Security
Keyless manhole lock
Description
This keyless manhole lock adopts battery-free design, supports keyless operation via Bluetooth connection, has IP68 waterproof and anti-corrosion rating, suitable for various manhole covers. Lock body material is SUS304 and ABS, operating temperature range -35~70°C.
Specifications
| Model | ZMT-20 |
| Weight | 1800g |
| Bluetooth | BLE 5.0 |
| Dimension | 169 x 140 x 72.5 mm |
| IP rating | IP68 |
| Lock body materials | SUS304, ABS |
| Operating temperature | -35~70°C |
| AASS acid salt spray test | >72h |
Get a Quote for This Product
100% Refund Guarantee24h Response100K+ Verified FactoriesYour data is safe
Free China Sourcing Guide
Learn how to find reliable factories, avoid scams, negotiate prices, and manage quality -- all from our years of on-the-ground experience in Ningbo.