This module is discontinued. Monitoring and control of Watchpower enabled inverters (Voltronic, MPP Solar, etc) is possible with Enapter ENP-RS232 (opens new window) and MPP Solar Single Mode Blueprint (opens new window) or MPP Solar Parallel Mode Blueprint (opens new window)


# RS-232-MPP Module

The RS-232-MPP Module monitor and manage MPP Solar Inverters with RS-232 port and Watchpower Serial Protocol. It sends the collected data to the Enapter Gateway and Cloud via secure wireless connection. The RS-232-MPP Module is based on Enapter RS-232 Module.

# Technical Data

Parameter Value
Voltage 9…60 V DC
Standardized Wire Gauge AWG 17 (1 sqm2)
Wireless Communication Wi-Fi 2.4 GHz
Bluetooth 4.0 LE
Integrated connection type RJ-10/4P4C
Antenna connection type SMA-F (module) – SMA-M (antenna)
Local signaling 1 LED (green): steady – correct operation, blinking – establishing connection with server
1 LED (red): module error
Current consumption 50 mA 12 V DC, max. 300 mA
Mounting 35 mm Din rail acc. to IEC 60715
Height 90.2 mm (3.55 inch)
Depth 57.5 mm (2.26 inch)
Width 18.1 mm (0.71 inch)
Net weight 0.050 kg

# Environmental Conditions

Parameter Value
Ambient air temperature for operation -40…+60 ℃
Ambient air temperature for storage -40…+60 ℃
Relative humidity for operation 20…90 %, without condensation
Relative humidity for storage 20…90 %, without condensation
Operating altitude 0…2000 m
Storage altitude 0…3500 m
Pollution degree 2
IP degree of protection IP20

# Connected device

Parameter Value
Type Watchpower Serial Protocol Inverters
(MPP Solar, Axpert, SILA, etc)
Connection to Module RJ-10/4P4C
Connection to MPP Solar Inverter RJ-45/8P8C
Connection Cable Length 1.0 m

# Dimensions

The dimensions are in mm and in brackets in inch.


# Mounting

The ENP-RS232-MPP Module must be horizontally mounted on 35 mm DIN rail according to IEC 60715.


# Connection Examples



1 Amp Circuit Breaker recommended to use on power line for the ENP-RS232-MPP Module.

# Connection Cable Pinout


2 Tx White/orange stripe Rx 1
1 Rx Orange solid Tx 2
White/green stripe Not used 3
Blue solid Not used 4
White/blue stripe Not used 5
Green solid Not used 6
3 Not used White/brown stripe Not used 7
4 GND Brown solid GND 8

# Standards

Wi-Fi protocols – 802.11 b/g/n/e/i (802.11n up to 150 Mbit/s).

Bluetooth protocols – Bluetooth v4.2 BR/EDR and BLE specification.

# Warnings


  • Alternating current voltage of 110 - 220 V is potentially lethal!

  • All works on assembly and installation should be performed only with a disconnected power supply!

  • The installation and assembly of electrical equipment must be carried out by electrically qualified persons.

The appearance of the product may differ from the images presented on the website or in this manual. The discrepancy between the appearance and packaging of the goods with a picture and description on the website or this manual is not an indication of poor quality goods. The manufacturer reserves the right to make changes to the design and packaging of the product without prior notice.

# Resources

ENP-RS232-MPP Module Datasheet (EN)

ENP-RS232-MPP Module Quick Start Guide (EN)

ENP-RS232 Module CAD Drawings (2D)

ENP-RS232 Module CAD Drawings (3D DWG)

ENP-RS232 Module CAD Drawings (3D STP)