Manaras-Opera 3-Button Garage Door Opener Transmitter RADIOEM-903 (replaces RADIO22)

Manaras-Opera RADIOEM-903 is a 3-button handheld garage door transmitter designed for reliable multi-door control in commercial and industrial environments. Operating at 313 MHz, this Series 900 fixed-code transmitter uses 10 DIP switch programming for secure, consistent communication with compatible Manaras receivers.

Capable of controlling up to three independent garage doors or gate operators, the RADIOEM-903 is perfect for warehouses, delivery bays, and other multi-access commercial facilities. Its LED signal indicator, ergonomic housing, and included visor clip make it convenient for handheld or in-vehicle use.

This model is a direct replacement for legacy remotes like the RADIO22 (MT3-1000), RADIO016, and RADIO027, offering dependable operation without compatibility concerns.

Product Highlights

• Model: RADIOEM-903

• Function: 3-button remote for operating up to three commercial garage doors

• Coding: 10 DIP switch key configuration for fixed-code access

• Frequency: 313 MHz

• Control Modes: Supports ECB (Open/Close), HW, SBC (Single Button Control), and Alternating Sequence Modes

• Range: Up to 100 feet line-of-sight

• Indicator: LED light confirms signal transmission

• Design: Compact and ergonomic (2" x 3.25" x 0.75")

• Power: Includes CR2032 lithium battery

• Mounting: Includes visor clip for vehicle installation

Compatible Receivers

• RADIORE-900

• RADIORE-900A (with external antenna)

• RADIORE-900B (wall mount)

• MR-1000 (RADIO-014)

• MRX-1000 (RADIO-015)

Replaces Discontinued Models

• MT2-1000 (RADIO-016)

• MT3-1000 (RADIO-022)

• MT-1000 (RADIO-027)

⚠️ Important Compatibility Note

This Series 900 transmitter is not compatible with on-board radio receivers or any rolling code systems (e.g., Series 100). It is exclusively for use with fixed-code, DIP-switch-configured systems.

Applications

• Multi-bay commercial garages

• Delivery hubs and distribution centers

• Vehicle fleet facilities

• Light industrial warehouses

The Manaras RADIOEM-903 is a high-performance, cost-effective replacement for legacy remote systems—built for durable day-to-day use in demanding commercial environments. Restore functionality or expand your door access control with confidence.