General
Housing degree of protection	IP 66
Storage temperature	-40 °C
Operation temperature	-25 °C
Relative humidity	max 95 %
Selection method	MFV or IWV
Tone call volume	60 dB(A)
Functions	Redial, mute, hearing aid compatibility 4x + 3dB, headset*, speakerphone*, ground/flash, 4 direct dial numbers, loudspeaker, speed dial
Terminal clamps	0,08 – 2,5 mm²
Cable gland	M16, Ø 5-10 mm
Blind plugs	1 x M12, 1 x M16
Handset	M12Flex, Ø 3-6,5 mm
Housing material	Polyamide
Securing screws	V4A (1.4571)
CE conformity	EN 50081, EN 50082, EN 60950, network access according to CTR21
Number of keys	16
Handset cord	Stainless steel
Handset holder	Continuously adjustable
Hearing aid	Switchable
Special keys	up to 2
Button illumination

The Vershoven A24 is a weatherproof industrial telephone designed for use in dusty and humid environments. It is suitable as a station or endpoint in industrial telecommunications and supports dialing methods including Multi-Frequency Dialing (MFV) and Pulse Dialing (IWV). The device features a robust control panel with 16 keys, which are illuminated in version 01.04000. The keys are designed for high mechanical durability and allow for clear operation even in poor lighting conditions. An infinitely adjustable holder ensures the handset remains securely positioned even during vibrations.

Applications
The A24 is designed for industrial applications, particularly in environments with high humidity, dust exposure, or outdoor use. Its IP66 protection rating ensures high resistance against dust and water, including water jets from all directions. This makes the telephone suitable for locations such as production halls, warehouses, outdoor installations, or manufacturing technology, where high mechanical and climatic durability is required.

Functions and Equipment in Detail
The telephone offers a variety of functions, depending on the key configuration. These include redial, mute function, speakerphone, speed dialing, and the ability to store up to four destination numbers. An integrated hearing amplifier can be activated and provides amplification of 4x plus 3 dB. Additional features include headset and speaker functions, as well as ground and flash functions. Version 01.04000 includes an illuminated keypad and a stainless steel handset cord, which enhances durability in harsh environments.

Technology Explained Simply
The IP66 protection rating means the enclosure is dust-tight and protected against water jets from all directions, making it suitable for outdoor use or in humid indoor environments. The operating temperature ranges from -25 °C to +55 °C, while the storage temperature ranges from -40 °C to +70 °C. Relative humidity can reach up to 95% without affecting the device. The enclosure is made of polyamide, a robust plastic that withstands mechanical stress and chemical influences. The securing screws are made of V4A steel (material 1.4571), ensuring high corrosion resistance. The ringtone volume ranges from 60 dB(A) to 90 dB(A) at a distance of 1 meter, ensuring good audibility even in noisy environments.

Compatibility and Accessories
The A24 is designed for use with standard telephone connections. The terminal blocks support a clamping range of 0.08 to 2.5 mm² for single, multi, and fine-wire cables. Cable gland connections are made via M16 with a diameter of 5 to 10 mm. Blind plugs in sizes M12 and M16 are included to seal unused connections. The handset is equipped with an M12Flex cord that supports a diameter of 3 to 6.5 mm. The stainless steel handset cord increases mechanical strength and lifespan.

Mounting and Installation
Installation is done on a wall or suitable surface. Mounting is achieved via a pre-drilled hole with a spacing of 128 to 134 mm. The infinitely adjustable holder allows for individual positioning of the handset. Cable glands and blind plugs facilitate installation and ensure a tight connection that maintains the IP66 protection rating.

Operational Advantages
The Vershoven A24 offers high reliability in demanding environments. Its robust construction, weatherproof IP66 protection, and high mechanical durability of the keys ensure a long service life. The illuminated keypad enables easy operation even in poor lighting. Integrated features such as hearing amplifier, speakerphone, and speed dialing enhance user-friendliness. The use of V4A screws and stainless steel handset cord reduces maintenance and replacement needs.