TOA Electronics RS-143 Single Gang Call Intercom Switch Panel

The TOA RS-143 is a high-quality momentary call button designed for reliable communication in commercial, industrial, and institutional environments. Crafted with a stainless steel hairline finish and a robust resin red call-in switch, this call button combines durability and visibility, making it ideal for high-traffic areas where dependable signaling is critical. Its compact design allows for easy installation in wall panels or enclosures while maintaining professional aesthetics.

Equipped to handle long-distance transmissions, the RS-143 supports multiple wiring options and wire gauges, ensuring clear signal transmission across distances up to 1.3 km (1421 yd) depending on cable thickness. The unit’s two-core shielded cable design minimizes interference, providing consistent performance in noisy electrical environments. Designed to operate in temperatures ranging from 32 °F to 104 °F, the RS-143 maintains functionality under a wide range of indoor conditions.

The RS-143 is easy to mount and integrate into existing communication systems. Its compact footprint allows it to fit into standard panels, and the included mounting hardware ensures secure attachment. Whether for use in offices, factories, schools, or public buildings, this call button provides a reliable and professional solution for initiating communication within a larger intercom system.

Key Features

• Momentary call button for reliable signaling
• Durable stainless steel plate with hairline finish
• High-visibility red resin call-in switch
• Supports long-distance transmission up to 1.3 km (1421 yd) depending on cable gauge
• Two-core shielded cable for interference-free operation
• Compact and easy-to-install design
• Wide operating temperature range: 32 °F to 104 °F

Technical Specifications

Call Button: Momentary
Wiring: Two-core shielded cable
Transmission Range: 0.5 km / 546 yd (Ø0.5 mm, AWG24), 0.8 km / 874 yd (Ø0.65 mm, AWG22), 1.3 km / 1421 yd (Ø0.9 mm, AWG19)
Operating Temperature: 32 °F to 104 °F (0 °C – 40 °C)
Finish: Plate: Stainless steel, hairline; Call-in Switch: Resin, red
Dimensions: 2.76" x 4.53" x 1.13" (W x H x D)
Weight: 0.18 lb (80 g)