---
product_id: 27181188
title: "Solar Controller - ReSol DeltaSol BS/Plus"
brand: "northern lights group"
price: "$2355.25"
currency: USD
in_stock: true
category: "Northern Lights Group"
url: https://www.desertcart.ec/products/27181188-solar-controller-resol-deltasol-bs-plus
store_origin: EC
region: Ecuador
---

# Energy metering & pump speed control 2 semiconductor relays for dual-zone control 4 precision Pt1000 sensors Solar Controller - ReSol DeltaSol BS/Plus

**Brand:** northern lights group
**Price:** $2355.25
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your solar system like a pro — control, optimize, and save with DeltaSol BS/Plus!

## Quick Answers

- **What is this?** Solar Controller - ReSol DeltaSol BS/Plus by northern lights group
- **How much does it cost?** $2355.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/27181188-solar-controller-resol-deltasol-bs-plus)

## Best For

- northern lights group enthusiasts

## Why This Product

- Trusted northern lights group brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **User-Centric Interface:** Illuminated system-monitoring display and intuitive 3-button operation for effortless control and monitoring.
- • **Smart Energy Efficiency:** Integrated energy metering and variable pump speed control maximize system performance and savings.
- • **Dual-Zone Control Mastery:** Seamlessly manage water and auxiliary heating zones with 2 powerful semiconductor relays.
- • **Future-Ready Connectivity:** Remote programming and system control via RESOL Service Center software ensures you stay ahead in solar tech.
- • **Precision Multi-Sensor Input:** Harness real-time data from 4 high-accuracy temperature sensors for optimized solar thermal management.

## Overview

The RESOL DeltaSol BS/Plus is an advanced solar thermal controller designed for professional-grade dual-zone systems. Featuring 4 precision Pt1000 temperature sensors, 2 semiconductor relays, and integrated energy metering, it offers precise differential temperature control, pump speed regulation, and multiple preprogrammed functions including freeze protection and tube collector management. Its illuminated display and remote programming capabilities make it a top-tier choice for efficient, smart solar thermal system management.

## Description

Solar Controller - RESol DeltaSol BS/plusAdvanced solar zone controller with four input sensors and two external pump/switch relaysThe RESOL DeltaSol BS Plus system controller is for standard solar thermal systems with 2 standard-relays allowing control of two zones such as water and AUX heating zone. It has an additional aqua stat function preprogrammed for different hydraulic layouts and is equipped with energy metering. The BS/Plus also comes standard with variable speed pump control.FEATURESIlluminated system-monitoring-displayUp to 4 temperature sensors Pt10002 standard-relay outputs and two tanks and two collector fields9 basic layouts are selectableHeat balancing, tube collector functionEnergy meteringFunction controlProgramming and remote control of the system via RESOL Service Center Software possibleRESOL VBusReal Time Clock (timer function)Aqua stat functionEmergency shut down and cooling functionFreeze protectionVacuum tube collector functionSPECIFICATIONSHousing: plastic, PC-ABS and PMMAProtection type: IP 20 / DIN 40050Ambient temperature: 0 ... 40 °CDimension: 172 x 110 x 49 mmInstallation: wall mounting, mounting into patch panels is possibleInputs: 4 temperature sensors Pt1000Outputs: 2 semiconductor relays (DeltaSol BS Plus)Operation: 3 push buttons at the frontFunctions: differential temperature controller with adjustable system functions, operating hours counter for the solar pump, tube collector function, thermostat function, pump speed controlBus: RESOL VBusPower consumption: approx. 2 VASwitching capacities: 1 (1) A 100 ... 240 V~ (semiconductor relay)Total switching capacity: 2 A 240 V~

## Features

- Solar Controller - ReSol DeltaSol BS/Plus
- Advanced solar zone controller with four input sensors and two external pump/switch relays
- Includes functions for differential temperature controller with adjustable system functions. Function control according to BAW-guidelines, operating hours counter for the solar pump, tube collector function, thermostat function, pump speed control, heat quantity measurement
- Suitable for solar thermal systems
- Allows control of two zones

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007EVJHI4 |
| Best Sellers Rank | #1,327,845 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,607 in Renewable Energy Controllers |
| Brand Name | Northern Lights Group |
| Manufacturer | PAW |
| Material Type | Plastic |
| UPC | 760537188434 |
| Voltage | 2 Volts (DC) |

## Product Details

- **Brand:** Northern Lights Group
- **Manufacturer:** PAW
- **Material:** Plastic
- **UPC:** 760537188434
- **Voltage:** 2 Volts (DC)

## Images

![Solar Controller - ReSol DeltaSol BS/Plus - Image 1](https://m.media-amazon.com/images/I/31cR5XnkeTL.jpg)
![Solar Controller - ReSol DeltaSol BS/Plus - Image 2](https://m.media-amazon.com/images/I/410UKXst+ML.jpg)

## Frequently Bought Together

- Solar Controller - ReSol DeltaSol BS/Plus
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**Shop now:** [https://www.desertcart.ec/products/27181188-solar-controller-resol-deltasol-bs-plus](https://www.desertcart.ec/products/27181188-solar-controller-resol-deltasol-bs-plus)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-04-01*