nJoin 2.0 Power Module with Class A GFCI
- Great for Large Projects: This device helps your main radiant heating thermostat handle larger projects
- Sleek and Modern Design: This updated power module represents the fusion of form and function
- Extensive Compatibility: Works with current (nJoy and nTrust 2.0) and previous (nSpire Touch WiFi, nSpire Touch, nTrust and nHance) thermostats
- Two Connectors with Screw Terminals: These help make final connections in the field easier and safer
- Safety Assured: cULus listed with a built-in GFCI for peace of mind
nJoin 2.0 Power Module Description
Some floor heating jobs are just too large for a single radiant heating thermostat to handle alone. The nJoin 2.0 power module is here to help you heat those larger projects.
The refined and modern-looking nJoin 2.0 links up to current (nJoy and nTrust 2.0) and previous (nSpire Touch WiFi, nSpire Touch, nTrust, and nHance) WarmlyYours radiant heating thermostats to increase the electrical output in 15 amp increments per module. This will help your heating system cover additional areas or large rooms, like basements, with a single thermostat.
The nJoin 2.0 features an attractive update to its design and is equipped with a dual-color LED indicator, offering a straightforward visual display of the unit’s status for effortless monitoring and troubleshooting. The LED changes color to convey different operational messages, ensuring quick and easy diagnostics.
Additionally, because the nJoin 2.0 doesn't provide any direct control functionality, it can be installed out of view if desired.
Comes with two connectors, one for the main thermostat and another for an extra power module if needed, that feature screw terminals for safe and easy installs.
Features:
- Works with current (nJoy and nTrust 2.0) and previous (nSpire Touch WiFi, nSpire Touch, nTrust and nHance) radiant heating thermostats.
- 3-year warranty
- Comes with screw terminals
- Built-in self-testing, Class A GFCI
- Dual voltage: 120V and 240V
- cULus listed
Specifications
Warranty / Certifications
| Approvals | cULus listed |
| Ingress Protection (IPxx) Rating | IP20 |
| UL Listing Number | E157297 |
| Warranty | Limited 3-year warranty and lifetime technical support |
Appearance
| Color | White Acrylic |
Electrical
| Connection | 4 wires, double pole |
| Connection Method | Hardwired |
| Ground Fault Protection | GFCI, Class A, 5 mA |
| Maximum Current | 15 A |
| Maximum Power | 1800 W @ 120 V, 3120 W @ 208 V, 3600 W @ 240 V |
| Supply | 120 VAC, 208 VAC, 240 VAC (50/60Hz) |
Product Dimensions
| Depth | 1.73″ |
| Installed Depth | 0.46″ |
| Length | 4.98″ |
| Weight | 0.4 lbs |
| Width | 3.09″ |
Identifiers
| SKU | USG5-4000 |
| UPC (GTIN-12) | 881308080433 |
Documents
Operation Manuals
Wiring Diagrams
- nJoin (USG-4000), nJoin 2.0 (USG5-4000) Power Module Wiring Diagram (English)
- Wiring Diagram for 120V & 240V Floor Heating Products with Relay with Thermostat (English)
Sell Sheets
Frequently Asked Questions
Showing all 5 questions
The breaker and wire sizes are selected based on the total amperage of the WarmlyYours heating system connected to a single thermostat. This information is on the WarmlyYours heating system's installation plan, electrical plan, or UL label. Based on guidelines from the National Electrical Code: loads up to 16 Amps may utilize 12 gauge wire with a 20-Amp breaker, and loads up to 12 Amps - 14 gauge wire with a 15-Amp breaker. Local code and/or other factors may change these guidelines.
No, floor heating thermostats are not compatible with the towel warmers. We would also not recommend using both devices on the same control, as it does not take the same amount of time to reach the ideal temperature for each product, which could lead to one unit to overheat and the other to not function properly.
Yes, radiant floor heating can be a primary heat source if its heat output exceeds the room's heat loss. For best results, we recommend using a 15-watt system, covering at least 80% of the floor, and ensuring the space is well-insulated. Use our Heat Loss Calculator to verify your specific needs.
Yes, radiant floor heating is an excellent primary heat source for tiny houses in mild to moderate climates. Because tiny houses have small footprints, the 15-watt output of TempZone™ can easily maintain comfort while saving valuable wall space. Ensure the structure is well-insulated and use our Heat Loss Calculator to confirm.
Yes, we strongly recommend installing insulation like ThermalSheet™ over concrete slabs. Concrete acts as a "heat sink," absorbing warmth that should go to your floor. Insulation directs the heat upward, significantly improving efficiency, reducing warm-up times, and allowing the system to function effectively as a primary heat source.