Robertshaw 9204H Mechanical Thermostat 24V Horizontal Mount Heat Only

The Robertshaw 9204H is a reliable mechanical low-voltage thermostat designed for single-stage heating applications. Part of the 9200 Series, this horizontal-mount thermostat combines straightforward operation with durable construction, making it an ideal replacement for gas, electric, oil, and heat pump heating systems.

Key Features:

• 24V AC low voltage operation (18-30V AC, 2 amp maximum)
• SPST (Single Pole Single Throw) switch action with Rh and W terminals
• Temperature control range: 50°F to 90°F with ±2°F accuracy
• Heavy-duty adjustable heat anticipator (0.2 to 1.6 amps) for compatibility with a wide range of heating equipment
• Mercury-free sealed-in-glass switch design requires no leveling
• Two-wire configuration for simple installation
• No sub-base required—mounts directly to wall or standard J-Box
• Easy-to-read temperature display for accurate room temperature measurement
• White horizontal design with simple two-piece construction

The 9204H's straightforward mechanical interface eliminates the need for programming, making it perfect for straightforward heating control in residential and light commercial applications. The wide-range heat anticipator ensures compatibility as a direct replacement for over 50 competitive thermostat models.