The Allen-Bradley 849-ZOD124 Pneumatic Timing Relay is an open-type timing device in the 849 family designed for 120 VAC control circuits. It provides a pneumatic timing function that delays the energization of a downstream load after an input signal, making it suitable for sequencing relays, contactors, and actuators in industrial control loops. Key specifications include 120 VAC operation at 50/60 Hz and compatibility with standard control panels that accept Rockwell’s 849 timing-relay modules. As a Rockwell Automation product, it represents a legacy line of pneumatic relays used to introduce precise, mechanical delays in automation sequences.
