I'm abusing IRIN, I'll admit. Instead of an IR receiver, I'm using a 433 MHz radio receiver per my post at https://picaxeforum.co.uk/threads/sending-ir-commands-over-radio-comms.31566/ I'm working on 2-way comms going between a robot and controller, and I'm getting long unexpected delays (up to several seconds, it varies) using a timeout with IRIN. I suspect there is some noise in these cheap radio receivers which is affecting PICAXE timeout. Hippy, Technical, can you comment on the nature of the timeout? Does any signal (non-SIRC code or noise) reset the timeout interval?