ISW1598 STS Split Prepayment Brass Water Meter STS Split Prepayment Brass Water Meter ISW1598 series is a STS (Standard Transfer Specification) compliant, electronic valve controlled, water meter. With ISW1598 series you are assured of continuously good metrology and revenue protection at the same time. A handy remote keypad, as Customer Interface Unit (CIU), is offered to enter recharge tokens and information short codes. The CIU is installed inside customerâ??s house, when the meter is kept away from customerâ??s reach in locked-up boxes or premises. The communication between CIU and the water meter is LORA. The meter is available with AMR data transmission features Main Features I. Directive 2014/32/EU, OMIL R-49:2013(E)& EN14154 compliant II. Wet dial / dry dial register construction on request III. Switchable between prepayment and post-paid. IV. Pre-programmable low credit warning V. Recharge by inputting 20 digits TOKEN with keypad CIU VI. Brass / plastic meter body on request VII. Reading through LORA and the system of GPRS /3G. VIII. Non- return valve preventing back-flow VIIII.CIU supports to match with different water meters VV. Support the valve control, through the handheld device and the system remote send valve control command.