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Why DC Combiner Box Is Essential for PV Systems
If you're a solar system buyer, installer, or project manager, let's get straight to the point—you're here because you need a definitive answer: Does your solar system really need a DC combiner box? A
• Hotspot Function
• Wireless Wi-Fi Networking
• Wired Ethernet Networking
• Network Indicator
• Power Level Display (on screen)
• RS-485 Serial Communication
• Supports management of up to 64 devices
| Power Supply | Power Supply Voltage Range: AC 120–275 V, 50/60 Hz Typical Power Supply Voltage: AC 220 V, 50 Hz |
| Transmit Frequency | EGSM900 Band: Class 4 (33 dBm ±2 dB) DCS1800 Band: Class 1 (30 dBm ±2 dB) EGSM900 8-PSK Band: Class E2 (27 dBm ±3 dB) DCS1800 8-PSK Band: Class E2 (26 dBm ±3 dB) LTE-FDD Band: Class 3 (23 dBm ±2 dB) LTE-TDD Band: Class 3 (23 dBm ±2 dB) |
| LTE Features | Maximum support for Cat 1 FDD and TDD Supports RF bandwidths of 1.4/3/5/10/15/20 MHz LTE-FDD: Maximum downlink rate 10 Mbps, maximum uplink rate 5 Mbps LTE-TDD: Maximum downlink rate 8.96 Mbps, maximum uplink rate 3.1 Mbps |
| GSM Features | GPRS: Supports GPRS multislot class 12 Coding schemes: CS-1, CS-2, CS-3, CS-4 Maximum downlink rate 85.6 kbps, maximum uplink rate 85.6 kbps EDGE: Supports EDGE multislot class 12 Supports modulation and coding schemes: GMSK and 8-PSK Downlink coding schemes: MCS 1-9 Uplink coding schemes: MCS 1-9 Maximum downlink rate 236.8 kbps, maximum uplink rate 236.8 kbps |
| Network Protocol Features | Supports the following protocols: TCP, UDP, PPP, NTP, NITZ, FTP, HTTP, PING, CMUX, HTTPS, FTPS, SSL, FILE, MQTT, MMS, SMTP, SMTPS Supports PAP and CHAP authentication for the PPP protocol Uses MQTT protocol by default; other protocols require customization |
| (U)SIM Interface | Supports 4G IoT cards from China's Mobile, Unicom and Telecom. Each gateway can only use one IoT card. |
| RS-485 Interface | Communication cable to circuit breakers shall not exceed 1 km, with support for up to 24 connected breakers.Default baud rate: 9600 bps. Configurable parity bit. MODBUS-RTU protocol supported by default; refer to the protocol document for details. |
| Antenna Interface | Interface Diameter: 6.35 mm Characteristic Impedance: 50 Ω Maximum Operating Frequency: 6 GHz |
| Temperature Range | Normal Operating Temperature: -35 ℃ to +75 ℃ ¹ Extended Operating Temperature: -40 ℃ to +85 ℃ ² Storage Temperature: -40 ℃ to +90 ℃ |
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