Check the listing for details. 4 Channel ESP32 Mains Current Sensor V2 - Node-MCU 38-Pin SCT013 - 100A/50mA. Condition: New. Listed at 8.75 USD. Mottramlabs.com Keeping it simple since 2018 Description: A 4-Channel mains power sensor using a current transformer and a Node-MCU 38-Pin ESP32 module (not included), the board uses the ESP32's own A/D (4 inputs). The transformer used is a "Current Transformer AC current sensor 100A SCT-013-000" available on eBay, the board can use either current or voltage output types of CT (link selectable). Warning: No direct connection should be made to any high voltage, use the Current Transformer as the manufacture recommends Board Version 2: ESP32 Node-MCU 38 Pin Fits Node-MCU boards with Width between pin rows = 22.86mm (0.9") or 25.4mm (1") PCB only Node-MCU board or CT NOT included. Specification: ● PCB Size: 56.5mm x 54.0mm ● CT Inputs: 4off 3.5mm Stereo Jacks (CT Inputs) Included: ⬦ PCB Assembled and Tested (ESP32 Board (Node-MCU) not included) Don't forget to look at My Other Boards Also Available: A simple 3D printable case design is available on thingiverse.com, search for Dimwit-Dave. Also the schematic is available. --> Terms and Conditions ● The customer is responsible for all customs duties and import taxes ● Payment must be received within 4 working days of purchase, however if this is not possible, please let us know to discuss solutions. ● You will be notified on the day that your goods have been despatched via e-mail. ● Once you receive your goods, please inspect them for any damage during transit, and report the said damage within 24hrs via e-mail. ● If all is well please leave feedback, so we are aware that you have received your goods. ● It is the customers responsibility to ensure that payment is received in the due time as listed above. ● All goods are sent via Royal Mail second class post. ● Goods will be despatched within 24 hrs of cleared funds, subject to the conditions listed in the payment section above. ● We accept no responsibility for goods delayed due to the services of the Royal Mail.