Student Timer

This high quality timer, from Frederiksen, is particularly suitable for experiments such as 'g' by free fall and speed of sound, as well as other experiments where accurate timing is required. It is compatible with a wide range of equipment, including microphones, photocells, and free fall apparatus. In addition to the modular plug, the timer can also be connected to other electrical devices via the safety sockets.
The timer is supplied with 6 x AA batteries so it is ready to use straight out of the box, as well as two modular cables for use with microphone SO150400 and photocell TI170200.
Durable for educational use, it will be a reliable resource for any science teacher or student.
• Range: 0.03 ms to 27 hours
• Resolution: 0.01 ms
• LED display with floating decimal point
• Manually controlled stopwatch option
• Accepts start and stop signals from microphones, photocells or any on/off switch connected to the mm sockets
• Power: 6 x AA batteries (included)
Compatible with the following equipment:
• SO150400 microphone
• TI170200 photogate
• TI170100 speedgate

Nominal trigger levels
• Safety sockets – Modular sockets pin 4, Low-to-High: 2.7 V DC.
• Safety sockets – Modular sockets pin 4, High-to-low: 1.8 V DC.
• Modular sockets pin 1. Frequency 5 kHz: 30 mV RMS.
Overload
• Modular sockets: Unshielded - connect only to 5 V logic levels (0 to + 5 V DC).
• Safety sockets: ±50 V DC or 50 V AC