Testo 557 Digital Manifold Set

Overview

The Testo 557 is a 4-way digital manifold set designed for refrigeration and air-conditioning technicians. In addition to two temperature-compensated pressure sensors and temperature inputs, it features an integrated vacuum sensor, so a single instrument covers pressure testing, superheat and subcooling calculation, and the full evacuation of a system.

Pressure is measured from -1 to +60 bar with 0.5% full-scale accuracy across three 7/16″ UNF ports plus a 5/8″ UNF vacuum connection, and the testo Smart App adds documentation, reporting and a second display on your mobile device. A large refrigerant database and clear backlit display make the testo 557 a dependable, all-in-one tool for daily service work.

Key Features

• 4-way digital manifold with an integrated vacuum sensor
• Two temperature-compensated pressure sensors for high and low pressure
• Automatic evaporating and condensing temperature calculation
• Superheat and subcooling with temperature clamp probes
• Bluetooth® with the testo Smart App for documentation and reporting
• Large refrigerant database and clear backlit display

Applications

• Servicing, commissioning and maintenance of refrigeration and AC systems
• High/low pressure and superheat/subcooling measurement
• System evacuation with the integrated vacuum sensor
• Evaporating and condensing temperature determination

What’s in the Box

• testo 557 4-way digital manifold with vacuum sensor
• 2 clamp temperature probes
• Batteries and calibration protocol

Why buy from MME in UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) is a trusted supplier of testo measuring instruments in the UAE, offering genuine products, competitive pricing and knowledgeable local support. Order with confidence and get fast delivery across Dubai, Abu Dhabi and the wider Emirates. Download the datasheet