Product Overview
DDS1000 is a compact 2P (36 mm wide) single-phase smart electric meter designed for apartment sub-metering, dormitory management, and small commercial premises. Featuring patented arc-suppression relay technology, RS485 Modbus-RTU communication, and Class 1.0 metering accuracy, DDS1000 mounts on standard 35 mm DIN rails and saves 50% cabinet space compared to conventional 4P meters. Manufactured by Diyu Smart's strategic partner Yima with 30+ years of energy metering expertise.
The proprietary arc-suppression technology addresses the #1 failure mode of smart meters — relay burnout from frequent switching. By actuating at the AC zero-crossing point, DDS1000 extends relay life by 30%+ over standard meters, dramatically reducing on-site maintenance visits.
Product Features
Compact 2P Width (36 mm): Saves 50% cabinet space vs. traditional 4P meters; fits more channels in standard distribution boxes.
Patented Arc-Suppression Relay: Zero-crossing switching cuts arc heat; relay life extended by 30%+ (proprietary Yima patent).
Class 1.0 Metering Accuracy: Meets IEC 62053-21 international accuracy standard; ± 1% precision on active energy.
RS485 Modbus-RTU + DL/T645: Seamless integration with any BMS, EMS, or third-party billing software.
Reverse Energy Anti-Steal: Detects and adds reverse energy to positive total — prevents tenants from reversing meters to steal electricity.
Prepaid + Postpaid Modes: Supports both landlord-controlled prepaid (auto-cutoff on balance zero) and standard postpaid metering.
Overload Protection: Configurable amp limit; auto-disconnects on excess load — prevents fire risk from high-power illegal appliances in dorms.
Tamper Alarm (Optional): Cover-removal detection reports to cloud instantly.
Use Cases
Serviced Apartments & Rental Housing: Landlord installs one DDS1000 per unit; tenants prepay electricity via WeChat/Alipay mini-program. Auto-cutoff on balance zero eliminates unpaid bill disputes.
Student & Corporate Dormitories: Set daily power caps to prevent illegal high-wattage appliances (space heaters, hot pots) — meter auto-disconnects on overload, mitigating fire risk.
Small Commercial Sub-Metering: Shopping mall shops, food court stalls — landlord bills tenants monthly based on actual consumption via RS485 → CZ1000-256 gateway → cloud.
EV Charging Sub-Metering: Community charging stations use DDS1000 to sub-bill individual charger cabinets.
BMS Integration for Green Buildings: LEED/BREEAM projects use DDS1000 for zone-level energy monitoring; Modbus data feeds into building analytics.
How to Install
- Turn off the main breaker before installation.
- Snap DDS1000 onto the 35 mm DIN rail in the distribution box.
- Wire L-in (top left), L-out (bottom left), N-in (top right), N-out (bottom right) per the terminal diagram.
- Connect RS485 A/B lines to your gateway (CZ1000-256 recommended).
- Power on; LCD shows kWh reading immediately.
- Configure the meter address (default 1) via the RS485 command or button interface.
Certifications & Warranty
CE, FCC, RoHS, IEC 62053-21 Class 1.0. Passes -25°C to +70°C climate test, 96-hour salt spray, and 100,000-cycle relay life test. 3-year manufacturer warranty.
Ordering Information
MOQ: 100 pieces
Sample: Available (charged, refundable on 500+ order)
Payment: 30/70 T/T; L/C accepted
Lead Time: 10-15 days
OEM/ODM: Custom logo, faceplate color, firmware protocol, packaging
Recommended Pairing: CZ1000-256 gateway for centralized management of 256 DDS1000 meters
Contact: Get bulk pricing →
https://www.diyusmart.com/contact/ 
