The STW36-B is an STS Standard compliant, split keypad type, automatically valve controlled prepaid water meter.

STW36-B Split Keypad Prepaid PAYG NB-IOT Water Meter-Stron Smart

The integrated keypad is offered to enter recharge TOKEN and check information by short codes.

Stronpay water vending software could be integrated to local Mobile Money Payment Platform like M-PESA, Alipay, MTN, Airtel, etc.

So users can top up PAYG water by mobile money without leaving the house.

Pay as you go function and excellent anti-tamper feature like Magnetic field protection to help utilities for Revenue water protection and consumer management.

Customer Interface Unit (CIU), is offered to enter recharge tokens and information by short codes.

The CIU is installed inside customer’s house, when the meter is kept away from customer’s reach in locked boxes or houses.

Metrological Parameters of different size

Size		DN15mm 1/2”	DN20mm 3/4”	DN25mm 1”
Overload flow rate Q4		3.13	5	7.87
Permanent l flow rate Q3		2.5	4	6.3
Transitional flow rate Q2		0.04	0.064	0.1
Minimum flow rate Q1		0.025	0.04	0.063
Ratio ”R” Q3/Q1		100	100	100
Maximum working pressure		16Bar	16Bar	16Bar
Maximum pressure loss		0.6Bar	0.6Bar	0.6Bar
Maximum reading		99999	99999	99999
Max temperature		50℃	50℃	50℃
Error	Q1≦Q≦Q2	5%	5%	5%
Error	Q2≦Q≦Q4	2%	2%	2%

Basic Functionality

Function	Details
Prepayment	STS Standard, recharge by input 20digits TOKEN
Low credit alarm	Alarm value can be set by inputting corresponding TOKEN
Prepaid and post-paid switch	Meter can be switch to prepaid mode or post-paid mode
Non-return valve	Non-return valve inside for preventing back-flow
Anti-tamper	Meter will automatically close the valve after detection of magnetic field and open cover event
Step Tariff	Step Tariff can be set by inputting corresponding TOKEN
Overdraft Collection	Non- Revenue water (Overdraft) can be collected day by day or month by month
Communication	The meter is available with AMI system through GPRS or Bluetooth 4.0 on request
Information Inquiry	Consumer could check the data like Credit Remain, Total Purchased and Total Credit by input the short code
Liquid Crystal Display