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SMS text message Controllers
SMS-ENVIROTXT 
Monitor - Receive text-alerts if the mains power is lost/restored etc
Monitor - Receive text-alerts if the mains power is lost/restored etcSMS-REMOTEPLUG 
Controller - Remotely control power, & receive alerts, all via SMS text messages
Controller - Remotely control power, & receive alerts, all via SMS text messages
ArticleComparison Table
| SMS-ENVIROTXT |
SMS-REMOTEPLUG |
|
|---|---|---|
| Power lost/restored alerts | Yes | Yes |
| Temperature threshold alerts | Yes | Yes |
| Remote power control | No | Yes |
| Rapid temperature rise alert | Yes | No |
| Automatic temperature control | No | Yes |
| Automatic time/date control | No | Yes |
| Operating temperature | -10°C to +50°C | -10°C to +50°C |
| Number of users | 4 | 5 |
| SIM Card size | Standard Size (Mini 2FF) | Standard Size (Mini 2FF) |
| SIM Card type |
PAYG / text-only SIM Card that uses SMS over the 2G GSM network. Not compatible with Three (or providers that use the Three network). |
PAYG / text-only SIM Card that uses SMS over the 2G GSM network. Not compatible with Three (or providers that use the Three network). |
| GSM Module | 850/900/1800/1900 Mhz | 900/1800 Mhz (Dual Band) |
| Warranty | 12 months | 12 months |