Nagios plugin for checking Tycon Power Monitors
Usage:
check_tycon -h [hostname] -u [username] -p [password] -c [checkstring]
where checkstring is a string of the form key:min:max. The key can be
any of volt[1-4], amp[1-4], temp[1-2], and min,max are floating point
numbers, which will be substituted by the appropriate infinity if left blank.