Rack temperature and humidity are best measured right at the intake or exhaust. The 1WR-HTemp Rack19 2p sits as a 1U element at the front or rear of the cabinet, covers -10 to +80 °C and 0 to 100 % RH, and passes the bus on to the next sensor through its second RJ11 socket.
Benefits
- Rack form factor: 1U, fits 19-inch and 10-inch cabinets, or mounts on a wall.
- Daisy-chaining: 2x RJ11 on the sensor, so several measuring points share one port.
- Two values: temperature at ±0.8 °C and relative humidity at ±5 % RH.
- Bus powered: 5 V via RJ11, no power adapter required.
- Compact: 44 x 84 x 19 mm and 27 g.
Technical data
| Measured values | Temperature, relative humidity (2 values) |
|---|
| Temperature range | -10 to +80 °C |
|---|
| Temperature accuracy | ±0.8 °C |
|---|
| Temperature resolution | 0.1 °C |
|---|
| Humidity range | 0 to 100 % RH |
|---|
| Humidity accuracy | ±5 % RH (2 to 80 % RH, non-condensing, 25 °C) |
|---|
| Humidity repeatability | ±0.2 % RH |
|---|
| Humidity resolution | 0.3 % RH |
|---|
| Sensor technology | Semiconductor |
|---|
| Interface | 1-Wire, 2x RJ11 for daisy-chaining |
|---|
| Cable | 3 m RJ11 cable |
|---|
| Power supply | 5 V via RJ11 (1-Wire bus) |
|---|
| Galvanic isolation | No |
|---|
| Operating conditions | -10 to +80 °C, 0 to 100 % RH |
|---|
| Storage conditions | -30 to +60 °C, 5 to 95 % RH |
|---|
| Dimensions (W x H x D) | 44 x 84 x 19 mm |
|---|
| Weight | 27 g |
|---|
| Mounting | 19-inch or 10-inch rack (1U), wall |
|---|
| Protection | IP23 |
|---|
| Warranty | 24 months |
|---|
| Manufacturer part number | 600889 |
|---|
Applications
- Intake and exhaust temperature and humidity in 19-inch server cabinets
- Cold aisle and hot aisle monitoring in server rooms
- 10-inch network cabinets in plant rooms and distribution closets
Scope of delivery
- 1WR-HTemp Rack19 2p temperature and humidity sensor with 2 RJ11 sockets
- 3 m RJ11 cable
Compatibility
- Designed by the manufacturer for Poseidon, Ares, STE2 and Perseus units