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STI Wireless Mail Alert with Voice Receiver

SKU: STIV34200

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Voice Alerts You When Zone Is Triggered

The STI Wireless Mail Alert with Voice Receiver informs you when you've got mail with customizable voice alerts and phrases. The compact Mail Alert sensor can be activated in three different ways (described below). Once activated, the sensor signals the Voice Receiver to alert you with custom voice messages.

  • Voice receiver delivers programmable tunes or voice alerts or phrases
  • Compact sensor informs you when monitored site is triggered
  • Wireless range up to 1,000 feet
  • Sensor mounts with double-sided tape or screws
  • Supervised for low battery and signal reception
  • Receiver supports up to four sensors

The Mail Alert Sensor is an advanced wireless transmitter that can trigger an alert in three different ways: internal magnetic sensor, internal tilt sensor, or external switch.

  • Magnetic: Triggers when sensor and magnet are separated by at least 1-1/3 inches.
  • Tilt: Triggers when sensor is tilted more than 45° from the vertical position.
  • External Switch: Terminals must first have a closed circuit. An open circuit triggers an alert signal.

When the mailbox is opened, the Mail Alert Sensor signals the wireless Voice Receiver to alert you. The Voice Receiver sounds your choice of 10 tone/tunes and 53 words (available in English or Spanish). With four channels, the receiver supports up to four sensors (additional sensors sold separately). Each connected sensor can trigger a different selectable alert.

Create Custom Voice Alerts for Immediate Notifications

The receiver's library of selectable words can be programmed in sets of up to four to create a custom message (i.e. "Mailbox + Alert", or "Mailbox + Open", etc.). There are also four LED zone indicators (latching or momentary) to further help you identify which sensor was triggered.

The receiver plugs into any indoor power outlet with the included adapter, up to 1,000 feet away from the sensor. It can be mounted on a wall, or simply placed on a tabletop. Place the Mail Alert on the inside of your mailbox lid or door and affix it and its magnetic contact with the included screws or double-sided tape. The contact also includes an 18-inch lead for irregular installations. When the contact is separated from the alert sensor, the sensor will transmit a signal to the Voice Receiver to inform you that your mailbox is filled.


  • Mailbox Alert
  • Voice Receiver
  • Power Adapter
  • Battery
  • Screws
  • Double-Sided Tape
  • Magnetic Contact

NOTE: Choosing a trigger option requires cutting wires. Once the wires are cut, you can only use a different trigger by soldering the cut wires back together.

We Protect The Things That Protect You®

Safety Technology International (STI) is a family owned and operated business that began over 35 years ago with Jack Taylor's invention of the Stopper Pull Station Protector. STI now markets more than 1,000 products throughout the world that help prevent false fire alarms, theft, and vandalism of the devices that protect us all.


Product Features

10 Selectable Tunes/Tones

  • Ding (Timbre (Din)
  • Ding-Dong (Din-Don)
  • Dong (Timbre (Don)
  • 4 Note Westminster (Carillon De 4 Notas)
  • 8 Note Westminster (Carillon De 8 Notas)
  • Knock Knock Knock (Llamada A La Puerta)
  • Jingle Bells (Cascabel)
  • Dogs (Zeke & Zoe) (Perros)
  • Old Fashioned Bell (Campana)
  • Buzzer (Zumbador)

53 Selectable 'Talking' Word Options

  • Front (Frente)
  • Side (Lado)
  • Rear (Trasera)
  • Door (Puerta)
  • Gate (Entrada)
  • Window (Ventana)
  • Driveway (Entrada)
  • Mailbox (Buzon De Correo)
  • Cabinet (Gabinete)
  • Safe (Caja Fuerte)
  • Monitor (Monitor)
  • Extinguisher (Extintor De Incendios)
  • Exit (Salida)
  • Emergency (Emergencia)
  • Call (Llamada)
  • Alert (Alerta)
  • Theft (Robo)
  • Keyfob (Llavero)
  • Assistance (Asistencia)
  • Customer (Cliente)
  • Service (Servicio)
  • Cover (Cubierta)
  • Dock (Muelle)
  • Pool (Piscina)
  • Shed (Cobertizo)
  • Temperature (La Temperatura)
  • Sump Pump (Pozo De Bombeo)
  • Freezer (Congelador)
  • Refrigerator (Refrigerador)
  • Water Level (Nivel De Aqua)
  • Upstairs (Arriba)
  • Downstairs (Abajo)
  • Basement (Sotano)
  • Kitchen (Cocina)
  • Garage (Gareje)
  • Deck (Terraza)
  • Patio (Patio)
  • Hall (El Pasillo)
  • Barn (Granero)
  • Medicine (Medicina)
  • Gun (Pistol)
  • Open (Abierta)
  • Close (Cerrar)
  • Trouble (Problemas)
  • Button (Boton)
  • Liquor (Licor)
  • Motion (Movimiento)
  • Protective Cover (Cubierta Protectora)
  • Pre-Alert (Pre-Aviso)
  • One (Uno)
  • Two (Dos)
  • Three (Tres)
  • Four (Quatro)

Technical Details

  • Manufacturer Part #: STI-V34200

Mailbox Alert

  • Wireless Range: Up to 1,000 feet line of sight
  • Power Supply: One 3V Lithium battery (included)
  • Battery Life: 5 years
  • Approvals: CE, FCC, IC

Voice Receiver

  • Frequency: 433 MHz
  • Wireless Range: 1,000 feet line of sight
  • Power Source: 12VDC, 500mA power adapter (included), or 3V lithium battery
  • Approvals: UL Class II, FCC, C minimum
  • Warranty: 1 year