Sourceful Energy
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Zap Reference Manual

This is a reference document that describes the Zap's leds, ports and button interaction.

Updated 2026-06-02Read in Svenska

Physical Layout

Your Zap has components on two sides:

Side A (Output Side/"OUT")

  • Reset Button – located to the left

  • Blue Status LED – located to the left of the reset button

  • Green Terminal Blocks – RS485 port that is for Modbus RTU (wired)

  • P1 Output Port (RJ12) – located on the far right, covered by a removable cap

  • Green Data LED – located inside the output port

Side B (Input Side/“IN”)

  • P1 Input Port (RJ12) – located to the left

  • Power USB-C Port – located in the center

  • Green Power LED – located inside the input port

Note: The Zap is shipped with a pre-attached RJ12 cable connected to the input port.

Ports and Connections

P1 Input Port (RJ12)

  • Location: Input side, left of Power USB-C port

  • Purpose: Connects to your energy meter's P1 port

  • Cable: Use included RJ12 cable

  • Power: Receives power from meter (no USB-C needed)

USB-C Port

  • Location: Input side, center

  • Purpose:

    • External power when P1 port doesn't provide it

    • Firmware updates (advanced users only)

  • When needed:

    • P1 port provides no power

    • Daisy-chaining devices

    • Meter far from WiFi router

P1 Output Port (RJ12)

  • Location: Output side, right

  • Purpose: Connect additional P1 devices (daisy-chain)

  • Default: Covered with removable cap

  • Important: When this port is in use, the Zap must receive external power via USB-C.

Green Terminal Blocks

  • Location: Output side, center

  • Purpose: Future sensor connections

  • Status: Reserved for upcoming features

  • Current use: Not active

LED Indicators

Power LED (Green)

  • Location: Input side, inside the input port

  • Solid green: Device has power

  • Off: No power - check connections

Data LED (Green)

  • Location: Output side, inside the output port

  • Blinks: Each time data is received from meter

  • Normal interval: Every 10 seconds

  • No blinking:

    • P1 port may be disabled

    • Contact grid operator to activate

Status LED (Blue)

  • Location: Output side, right (next to button)

  • Behaviors:

Pattern

Meaning

Solid on

Bluetooth Setup mode - no WiFi configured

Single blink at startup

Zap is starting

Double blink
​**(some time after start up blink)**

Connected to WiFi (usually within 30 seconds, may vary depending on WiFi coverage).

Slow blinking

Button held 2-5 seconds (restart pending)

Fast blinking

Button held 5+ seconds (reset pending)

Single blink

Button pressed briefly

Reset Button Functions

The button provides different functions based on how long you hold it:

Quick Press (< 2 seconds)

  • Action: Status LED blinks once

  • Result: No action (acknowledgment only)

Hold 2-5 Seconds

  • Visual: Status LED blinks slowly

  • Release action: Restarts device

  • Use when: Device seems frozen

Hold 5+ Seconds

  • Visual: Status LED blinks rapidly

  • Release action: Reset

  • Result:

    • Clears WiFi credentials

    • Device starts in Bluetooth setup mode

  • Use when:

    • Changing WiFi networks

    • Device won't connect

    • Selling/moving device

Normal Operation

When everything is working correctly:

  1. Green Power LED: Solid on

  2. Green Data LED: Blinks every ~10 seconds

  3. Blue Status LED: Double blink pattern

  4. App shows: Recent energy data

First-Time Setup

  1. Connect The Zap to the meter's P1 port (input side) using included RJ12 cable

  2. Power LED turns green

  3. Status LED stays solid blue (setup mode)

  4. Open The Sourceful Energy app

  5. Enable Bluetooth on your phone

  6. Follow app instructions

  7. Select 2.4GHz WiFi network

  8. Success: Status LED shows double blink

Troubleshooting Quick Reference

Problem

Check

No LEDs

Power connection, try USB-C

Status LED solid

Device in bluetooth setup mode, WiFi configuration needed.

Status LED single blink but never any double blink after that.

WiFi connection failed. Improve wifi coverage, or reset and reconfigure wifi.

No Data LED blinks

P1 port activation needed

Device hot

Wrong port type - Disconnect!

Important Notes

  • WiFi: Only 2.4GHz networks supported

  • Power: Most P1 ports provide power

  • Security: WPA2/WPA3 supported

  • Range: Stay close during setup (Bluetooth)

  • Updates: Automatic via WiFi

Support

For additional help:

Zap Data Sheet and Technical Spec