Hi, I'm using a TCP gateway without any problems. Just place a TCP node in input instead of your MQTT node, I used this tutrial
Best posts made by David Muller
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    RE: NodeRed TCP Gatewayposted in Node-RED
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    RE: [SOLVED] My node fails to sendposted in TroubleshootingBeautiful, I added the define and it works very good now ! 
 Big thanks to you !!!
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    RE: [SOLVED] Batteries powered temperature sensore node drawn too much currentposted in TroubleshootingHi, I finally solved the issue, the node takes about 0.02mA in sleep mode, the problem was located on the nrf24L01+, I had a 5 of them, and two nrf did the same problem (to much current in sleep mode). 
 So I will keep the "hungry" NRF for sector supply nodes.Bye