29/06/2026
HR β Electronic π» LCD screen, temp/pressure compensation, RS485/pulse output. For remote monitoring & system integration.
HRM β Mechanical π No power needed, direct reading, cost-effective. For basic metering.
HRS β Dual π₯οΈ Mechanical + LCD display. Redundant reading for high-reliability applications.
HR Prepaid π³ IC card prepayment, built-in valve. Pay-before-use for gas utilities & commercial users.
HRS Prepaid π Dual display + prepayment. Smart control + mechanical backup for data security.
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