Customizable Keypad STS Prepaid Water Meter with 84 Flow Rate and 1km Measurement Range
The STW36-A Prepaid water meter offers exceptional value for African markets, combining smart technology with competitive pricing. Reduced volumetric water meter technology costs and improved logistics through railway construction contribute to its affordability.
With accuracy reaching up to R160 (optional), the STW36-A excels in its core function. Special features for African environments include:
- Anti-Tamper function that automatically closes valves upon detecting magnetic fields or cover openings
- STS standard compliance
- IP68 waterproof protection
The STW36-A incorporates three power management strategies:
- Lithium battery technology
- Minimized energy consumption
- Triple protection against moisture
Field tests demonstrate over 6 years of operation from the built-in lithium battery.
The STW36-A includes Stronpay water vending software (free) that integrates with mobile payment platforms like M-PESA, Alipay, MTN, and Airtel. Two recharge methods are available:
- Traditional token purchase at water utilities
- Mobile money payments through integrated apps
The vending system's token codes enable multiple functions:
- Account recharge
- Data management (clearing/restoring)
- Maximum overdraft setting
- User and role management
Our LoRa-RF technology enables utilities to implement:
- Collective meter reading
- Remote monitoring
- Autonomous recharge systems
- IP68 waterproof rating
- 8-year battery life
- Automatic valve control
- STS Standard compliance
- Real-time clock
- Customizable step pricing
- Anti-tamper magnetic field protection
- Optional LoRa-RF or Bluetooth 4.0 communication
- Mobile payment integration
| Size | DN15mm 1/2" | DN20mm 3/4" | DN25mm 1" |
|---|---|---|---|
| Overload flow rate Q4 | 3.13 | 5 | 7.87 |
| Permanent 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°C | 50°C | 50°C |
| Max permissible error (MPE) | Q1≤Q≤Q2, MPE=±5% Q2≤Q≤Q4, MPE=±2% |
||
| Function | Details |
|---|---|
| Prepayment | STS Standard, recharge by input 20 digits TOKEN |
| Low credit alarm | Alarm value can be set by inputting corresponding TOKEN |
| Prepaid/post-paid switch | Meter can switch between prepaid and post-paid modes |
| Non-return valve | Prevents back-flow |
| Anti-tamper | Automatically closes valve after detecting magnetic field or cover opening |
| Step tariff | Customizable through token input |
| Overdraft collection | Non-revenue water can be collected daily or monthly |
| Communication | Optional AMI system through LoRa-RF or Bluetooth 4.0 |
| Information inquiry | Users can check credit, purchases, and totals via short codes |
| Size | DN15 1/2" | DN20 3/4" | DN25 1" |
|---|---|---|---|
| Length (mm) | 165/190 | 190 | 225/260 |
| Width (mm) | 99 | 99 | 103 |
| Height (mm) | 104 | 106 | 114 |
| Connecting thread | G3/4B | G1B | G1-1/4B |
Samples are available with a nominal fee to cover costs. For large orders, sample fees may be deducted from the purchase price.
Standard delivery takes 5-10 days. Custom orders require 15-30 days.
Our primary markets are Africa and South Asia, with an estimated 500,000 users across these regions through both direct sales and OEM partnerships.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.