Parker, Valve Positioners, models:

401XE Series	Product Manual
401XR Series	Product Manual
404	Product Manual
404LXR Series	Product Manual
404XE Series	Product Manual
406LXR Series	Product Manual
Daedal 400LXR Series	Product Manual
Daedal 412LXR Series	Product Manual
Daedal 412T01LXR	Product Manual
HMR Series	Assembly And Operating Instructions Manual
LCR Series	Product Manual
MSR Series	User'S Information Manual
MX80L series	Product Manual
MX80S Series	Product Manual