node-red-contrib-comparator

A Node-RED node that compares two numeric values identified by msg.topic and outputs a boolean result.

Installation

npm install node-red-contrib-comparator

Inputs

• payload number: Value for input A or B (identified by msg.topic).
• topic string: Set to Topic A or Topic B name.
• operator (optional) string: Override operator: > < >= <= == !=
• reset (optional) boolean: Clear stored A and B values.

Outputs

• payload boolean: Comparison result.
• comparator object: { a, b, operator, result, tolerance }

Configuration

• Topic A/B: msg.topic identifiers (default: a / b).
• Operator: Comparison operator (default: >).
• Tolerance: Dead band for == and != comparisons (default: 0.01).

Tips

• Output fires when both A and B are known.
• Tolerance applies only to == and != operators.

License

MIT (c) sr.rpo