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| Home Principle of Operation Streetlight Monitor Street Light Monitoring System Emergency Light Monitoring System |
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| Streetlight Moniter
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Operation |
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Benefits
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| Streetlight
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The Master module is mains-powered (230vac, 20VA), contains a 433MHz transceiver, a GSM/GPRS modem and connects to the photocell in the lamp. When the photocell is triggered, the master unit instructs its slave units to switch on or off as appropriate.
Slave Street-lamp unit is pin compatible with the standard NEMA photocell. It is designed as a direct replacement for existing photocells making it quick and easy to fit. It is mains-powered (230vac, 5VA). The Street-lamp slave monitors the lamp after switch on and reports any lamp failure and also monitors the power factor. |
| In addition to monitoring the lamps, explicit tests can be run on individual lamps. Any slave can be instructed to switch on or switch off its lamp.
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| There is a ‘watchdog’ facility in case of power failure to the slave unit – the master unit polls the slaves periodically and reports if a slave cannot be contacted.
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An SMS message can be sent from the host pc to alert an engineer to a failure, if required.
The Street-Lamp Slave is suitable for lamps in the range 75-250 watts using triac switching. |
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