Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
September 08, 2026 4 min read
Complete setup, configuration, and troubleshooting guide for the Temperature@lert WiFi Edition (TM-WIFI330) environmental monitoring device.
The Temperature@lert WiFi Edition (Model TM-WIFI330) is a standalone environmental monitoring device that watches up to 4 temperature/humidity sensors and sends email alerts when readings fall outside your set thresholds.
The WiFi330 continuously measures conditions from connected sensors and alerts you by email if readings go out of range — with an optional cloud service (Sensor Cloud) adding phone-call notifications, alarm escalation, missed-report alerts, and online history archiving. The unit has no built-in sensors; 1–4 external probes connect via its sensor jacks (up to 20 with special order).
Indicator Lights: Status (single blink = normal operation), Failure (single blink = no sensors detected). Power and Warning LEDs are reserved for future use.
Download the firmware flashing kit from temperaturealert.com/support (Downloads section) and follow the included readme instructions.
| Spec | Value |
|---|---|
| Dimensions | 1.21" x 3.87" x 7.24" (30.74 x 98.30 x 183.90mm) |
| Processor | 32-bit MIPS R4Kc-class, 183MHz |
| Memory | 64Mbit (8MB) Flash, 256Mbit (32MB) SDRAM |
| Ethernet | 10/100 Base-TX with PoE |
| Wireless | 802.11 b/g/n, WPA/WEP security, 500mW output, 2dBi antenna, Atheros AR2315 chipset |
| Operating Temp | 0°C to 40°C (32°F to 104°F), non-condensing |
| Power Source | 9–48VDC, 0.38A typical @ 12V; included adapter 115VAC |
| Temperature Sensor Range | -55°C to 125°C (-67°F to 257°F); optional -200°C to +200°C probe |
| Temperature Accuracy | ±0.5°C from -10°C to +85°C |
| Humidity Sensor Range | 0–100% RH; ±3% accuracy from 11–89% RH |
| Standard/Max Cable Length | 6 ft standard / 200 ft maximum |
| Data Log Format | Text, XML |
| Alert Frequency | 1–9999 minutes, continuous or one-time alerts selectable |
| SNMP / SMTP Auth | Yes / Yes |
| Software Upgrades | 1 year free (standard); free ongoing with Sensor Cloud subscription |
| Warranty | 1 year, 30-day money-back guarantee |
www.temperaturealert.com | support@temperaturealert.com
Sign up to get the latest on sales, new releases and more …