Smart Cloud Alarm Dialer & Dry Contact Input
Connect any external sensor, relay, or industrial fail switch to turn your MaxLinc EDGE monitor into a next-generation Cloud Alarm Dialer. No dedicated landline, no monthly fee on WiFi (cellular is about $26.67/year after the first year, billed annually), and, with Premium, simultaneous dispatch to unlimited recipients.
Why Replace Legacy Industrial Autodialers?
Traditional industrial alarm dialers (autodialers) rely on 1990s technology: expensive dedicated hardware, landlines, or dedicated monthly SIM cards, and slow sequential phone trees.
Traditional Industrial Autodialers
- Requires dedicated analog POTS landline ($50-$100/mo) or dedicated SIM contract
- Sequential phone dialing — calls only 1 person at a time (busy signal stops alerts)
- No push notifications, no mobile app, no live cloud audit trail
- Complex landline wiring and single-purpose expensive hardware box
MaxLinc EDGE Cloud Alarm Dialer
- No dedicated landline or expensive carrier plan — no monthly fee on WiFi; built-in cellular is about $26.67/yr (about $2.22/mo) after the first year, billed annually
- Simultaneous dispatch — Phone Calls + SMS + Email + Push sent to UNLIMITED recipients at once (with Premium)
- Full cloud audit trail, app status, and remote alert acknowledgement
- Universal NO/NC dry contact terminal built into every EDGE environmental logger
Universal Dry Contact Compatibility
Connect any voltage-free Normally Open (NO) or Normally Closed (NC) relay switch or sensor directly into the EDGE terminal block:
Generators & Automatic Transfer Switches (ATS)
Receive voice-call and SMS alerts if your standby generator fails or trips an error relay.
Sump Pumps & Liquid Level Floats
Connect a high-water float switch as a secondary fail-safe alert before basement or mechanical room flooding occurs.
HVAC, Chillers & Compressor Trips
Monitor boiler fault relays, air pressure switches, and chiller trip contacts to prevent HVAC breakdown.
Burglar & Fire Alarm Panel Auxiliary Outputs
Interface directly with security panel auxiliary dry contacts to get instant multi-recipient cloud notifications.
Industrial Pressure & Flow Switches
Get notified the instant fluid line pressure crosses high/low safety thresholds or limit switches toggle.
Door & Vault Intrusion Switches
Attach magnetic reed switches to secure cold room doors, server room entries, or sensitive vault doors.
Engineered for Mission-Critical Alerting
Unlimited Recipients with Premium
Never limit emergency alerts to 1 or 2 technicians. Notify your entire operational team simultaneously across multiple phone numbers and email addresses.
Multi-Channel Redundancy
Alerts hit your team across 4 vectors: automated Phone Calls, SMS Text Messages, Email, and Mobile App Push Notifications.
Dual Environmental + Relay Logging
Track ambient temperature, relative humidity, and mold index 24/7 on the same device while monitoring the digital dry contact input.
Remote Acknowledgement & Audit Logs
Track who acknowledged the alert with timestamped cloud records for compliance and operational accountability.
Feature Comparison
| Feature | Legacy POTS / Cell Autodialers | MaxLinc EDGE Cloud Dialer |
|---|---|---|
| Hardware Cost | $500 – $2,000+ | FREE (Built into EDGE Monitors) |
| Dedicated Landline / SIM Cost | $50 – $100 / month | $0 / month on WiFi (cellular: ~$26.67/yr after the first year) |
| Recipient Limit | Strictly 4–8 phone numbers | UNLIMITED Recipients with Premium |
| Dispatch Method | Sequential (One phone call at a time) | SIMULTANEOUS Calls + SMS + Email + Push |
| Alert Acknowledgment | DTMF key press on phone call | Phone, App, Web, or Email 1-Tap Ack |
| Environmental Logging | None (Alarm-only) | Full Temp, Humidity & Mold Index Logging |
| Cloud Audit Trail | No | Yes (Cloud logs & compliance export) |
Compatible EDGE Family Monitors
Every MaxLinc EDGE device comes standard with a built-in Dry Contact Digital Input terminal block:

EDGE Essential WiFi Temperature & Humidity Data Logger & Alarm
WiFi temperature and humidity data logger and alarm with text, call, email and push alerts, for rooms, offices and cottages. No monthly fees on WiFi. Also suits server closets. Alerts go out the moment readings drift; it measures -20 to +70 °C (-4 to +158 °F) and runs up to 3 years on 4 AA batteries, depending on settings (USB-C optional). For inside a fridge or freezer, choose EDGE Thermo with external probes.

EDGE Essential Cellular Temperature & Humidity Data Logger & Alarm
<p>Cellular temperature and humidity data logger and alarm with a built-in SIM and text, call, email and push alerts, for cottages and remote rooms with no WiFi. Measures -20 to +70 °C (-4 to +158 °F) and runs up to 2 years on 4 AA batteries, depending on settings and signal (USB-C optional). For inside a fridge or freezer, choose EDGE Thermo. Cellular plan: first year included, then about $26.67/year (about $2.22/month) per device, billed annually.</p>

EDGE Thermo WiFi Dual-Probe Fridge & Freezer Temperature Data Logger & Alarm
WiFi fridge and freezer alarm and temperature data logger with two external probes and text, call, email and push alerts. No monthly fees on WiFi. The probes sit inside the unit, and an on-device buzzer sounds before food, stock or samples are lost. Probes read -55 to +125 °C (-67 to +257 °F), with readings logged for HACCP records and up to 3 years on 4 AA batteries, depending on settings (USB-C optional).

EDGE Pharma Two WiFi Dual NIST-Traceable Probe Temperature Data Logger & Alarm
WiFi vaccine fridge alarm and temperature data logger with two buffered, NIST-traceable probes and text, call and email alerts. No monthly fees on WiFi. Watches two side-by-side vaccine fridges from one device (each probe is on a 1.5 m / 5 ft cable), with calibration certificates, push alerts and readings logged for your records. Runs up to 3 years on 4 AA batteries, depending on settings (USB-C optional).

EDGE Air WiFi CO2, VOC, Temperature & Humidity Air Quality Monitor & Alarm
WiFi CO2 and air quality monitor and alarm with text, call, email and push alerts, for offices, classrooms and meeting rooms. No monthly fees on WiFi. Alerts go out when the air gets stale, tracking CO2 (400 to 2,000 ppm), VOC, temperature and humidity. Runs up to 3 years on 4 AA batteries, depending on settings (USB-C optional).
Frequently Asked Questions
What is a Dry Contact Input?
A dry contact input (or voltage-free digital input) is an electrical contact interface that detects whether an external circuit is open or closed (Open/Close). It does not supply voltage; it simply detects contact closure from external relays, switches, or sensors.
How does MaxLinc replace a traditional autodialer?
Traditional autodialers require a dedicated analog landline or paid cellular plan to plug into a wall. MaxLinc EDGE connects to your WiFi or cellular network and uses our cloud infrastructure to generate phone calls, SMS, emails, and app push notifications instantly without needing a physical phone jack or dedicated SIM plan.
How many phone numbers and emails can be notified simultaneously?
With Premium (included for every device's first year, and always on cellular), there is no limit: you can configure an unlimited number of recipients to receive phone calls, SMS text messages, emails, and mobile app push notifications simultaneously the moment the dry contact status changes. On the free Standard tier, everyone already on the list keeps their alerts, but adding someone new needs Premium.
Can I monitor temperature and humidity at the same time?
Yes! The dry contact input is an additional built-in feature on EDGE devices. Your device continues to log ambient (or external probe) temperature, humidity, and mold index while continuously listening for dry contact state changes.
Upgrade Your Industrial Autodialer Today
Get built-in dry contact digital input, simultaneous multi-channel alerts, and zero monthly phone line fees with MaxLinc EDGE.
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