Long user manual – versions U1, U2, U3 iotty Support Team February 02, 2018 10:36 Updated Follow This is a longer version of the manual you find in the product box. It explains how to wire iotty Light Switch correctly. LONG-MANUAL-U1-U2-U3-v1.pdf 100 KB Download Related articles Datasheet – versions U1, U2, U3 Long user manual - version I3 (I3-3) Long user manual – versions E2 (E2-2) User manual – versions U1, U2, U3 Extended user manual - 3way