<p>Features:</p><ul><li>Debit flow measurement</li><li>Realtime control and monitoring (cloud)</li><li>Push Notification</li><li>Support prepaid/postpaid scenario</li><li>Top Up Method :<ul><li>Smartcard</li><li>NFC 13.56mhz mifare/desfire,</li><li>online push,</li><li>token (optional)</li></ul></li><li>API Integration</li></ul><p>Technical Specification</p><ul><li>Pulse signal accuracy: 0.005 m3</li><li>Water temperature: 0.1℃ - 30℃</li><li>Working voltage: 3.6V/2.4Ah lithium battery (optional)</li><li>Ambient humidity: ≤ 93%</li><li>Battery service life: ≥ 2 years</li><li>Working pressure: ≤ 1.6 mpa</li><li>Pipe material: brass/cast iron</li><li>Data storage: cloud based and internal storage</li><li>Connectivity: NB-IoT</li><li>Top up method: smartcard, NFC 13.56mhz mifare/desfire, online push, token (optional)</li></ul>