Senays trm111a Tinytrol Air Switch Spdt Momentary 21A

Product Description

The SENAYS trm111a is a TinyTrol pneumatic air switch configured as a single pole double throw (SPDT) momentary switch rated at 21 amps. Momentary operation means the switch returns to its neutral position immediately after the actuating air pulse is released, making it well suited for hands-free activation in wet environments. Licensed HVAC, plumbing, and pool service technicians install this type of air switch where a remote pushbutton or air hose generates the switching signal rather than direct electrical contact. The durable construction is intended to withstand repeated cycling and moisture exposure in both residential and commercial installations.

The trm111a is designed for air-activated control applications in pools, spas, and baths. Typical installations include whirlpool tubs, jetted spas, and pool equipment pads where the control button is mounted at the water's edge and a small-diameter air tubing run connects it to the switch body located at the equipment. The momentary SPDT configuration allows the switch to trigger pumps, blowers, or other loads without the operator ever touching an energized component. It is appropriate for both residential and light commercial environments that require reliable, low-maintenance switching.

Key Features

• SPDT momentary action returns switch to neutral position after each air pulse
• 21-amp capacity supports pumps, blowers, and other motor loads common in spa and pool equipment
• Pneumatic actuation keeps the operator isolated from live voltage at the point of activation
• Durable construction rated for frequent cycling and exposure to moisture
• Compact TinyTrol form factor fits standard air switch mounting locations in spa and tub equipment

Compatibility

Designed as an OEM-style replacement for SPDT momentary pneumatic air switches used in residential and commercial pool, spa, and bath equipment installations.

Installation Notes

Installation should be performed by a licensed electrician or qualified pool and spa technician in accordance with NEC Article 680 and applicable local codes. Disconnect and lock out all power to the equipment before removing the existing switch or making any wiring connections. Route air tubing to avoid sharp bends that could restrict airflow or cause premature tubing fatigue. Verify that the load current does not exceed the 21-amp rating of the switch before energizing the circuit.

Technical Specifications

• Switch Type: Pneumatic Air Switch
• Switching Configuration: SPDT (Single Pole Double Throw)
• Actuation Mode: Momentary
• Current Rating: 21 amps
• Typical Application: Pools, spas, baths

Standard Information

• Brand: SENAYS
• Manufacturer Part Number: trm111a