1、meter reading: photoelectric direct reading technology, direct output data dial, no cumulative error pulse
2、communication protocol: "cj / t188-2004 household meters data transmission technology," or the two sides agreed
3、communication: rs-485
4、power supply: dc 12v, provided by an external device
5、water temperature: cold water meter ≤50 ℃, hot water meter ≤90 ℃
6、pressure: ≤1.6 mpa
