The HW Group (http://www.HW-group.com) has released the Poseidon
4002, a 19-inch 1U rack mount system for datacenter temperature and
environment monitoring.

The Poseidon presents the solution for monitoring of the racks and
computer rooms (temperature, humidity, electricity supply, access to
the room, detectors). The device alerts by e-mail, SNMP traps, SMS,
output relays.
Poseidon 4002 is designed to offer a complete system for environment
monitoring in a 19-inch rack, an entire server room or in a
datacenter. The 4002 model can be mounted as a 1U device, or outside
of the 42U space.

Eighteen sensors are supported (temperature, humidity, smoke, flood,
electricity supply status or failure, entry to the room, digital
inputs). The device is SNMP compatible. Two monitoring applications
(PD Trigger and HWg-PDMS) are included free of charge. Contact the HW
Group for pricing options.