| Design | Round | ||
| Symbol | 991.637 | ||
| CE mark (see declaration of conformity) | To EU EMC Directive | ||
| Measuring principle | Optoelectronic | ||
| Operating distance | 20.000 mm | ||
| Switching output | PNP | ||
| Max. switching frequency | 1.000 Hz | ||
| Voltage drop | ≤ 2 V | ||
| Operational voltage range DC | 10 V ... 36 V | ||
| No-load supply current | 10 mA | ||
| Electrical connection | 4-pin M12x1 Plugs | ||
| Type of mounting | Via lock nut | ||
| Product weight | 40 g | ||
| Material union nut | Brass Chrome-plated | ||
| Function reserve indication | Green LED | ||
| Degree of protection | IP65 IP67 |
| Conforms to standard | EN 60947-5-2 | ||
| Approval | RCM trademark c UL us listed (OL) | ||
| Measured variable | Position | ||
| Measurement method | Through-beam sensor Receiver | ||
| Ambient temperature | -25 °C ... 55 °C | ||
| Switching element function | Antivalent | ||
| Max. output current | 200 mA | ||
| Short circuit current rating | Pulsed | ||
| Residual ripple | 20% | ||
| Reverse polarity protection | For all electrical connections | ||
| Size | M18x1 | ||
| Tightening torque | 20 Nm | ||
| Material housing | Brass Chrome-plated | ||
| Switching status indication | Yellow LED | ||
| Ambient temperature with moving cable | -5 °C ... 55 °C | ||
| Corrosion resistance class CRC | 1 - Low corrosion stress |
