China Jingdao Machinery & Electronic Co., Ltd. is one of the signal generators manufacturer and signal generator dealer in China that has patents on the motors and generators design. There isn't any problem with IP protection laws when you buy our generator, motor, engines, diesel, gearmotors and other power supply and motor-driven items, even in strict regions, such as North America and Europe. Our company has obtained the certifications of ISO9001-2000, GS/TUV, CE, VL, EPA, QHS, SON, CAP and SRS and we have won EPA 2005 Motor Year Certification. We'll print custom logos and signal generator product documentation in your language, and provide spare parts for easily worn down components. We also can design and deliver OEM/ODM samples in one month.

The Sonachron is a dual-purpose, single circuit program timer, ideal for signaling horns and bells or for controlling the On/Off status of electrical devices such as HVAC or appliances. The Sonachron is user-friendly, with a front-mounted keypad that lets you program the exact minute and weekday(s) of each event. An optional dip switch can be set for operating the unit as a control device. As a control device, the relay latches On or Off according to your schedule. A keypad allows easy programming and changes to schedule for operating the internal 10-amp dry contact relay. The weekly schedule can have up to 1,440 events. Each event includes the day(s) of the week and the time. Signal duration can be set from 1 to 99 seconds. If desired, a 4-digit security code entry can be required by keypad for preventing unauthorized tampering. An internal battery retains memory and timekeeping during power failures lasting up to 7 days. The Sonachron can be connected to an Omni:Chron time recorder in order to synchronized the bells to the Omni:Chron.

Stable Portable or Bench Audio Generator. Selectable Mic or Line Level Output. Precision Audio Reference Level. Connectorized Balanced and Unbalanced Outputs. Operation from Standard 9 Volt Battery or 24 Vdc. The PT-ASG1 is a portable or benchtop audio oscillator used in applications requiring a stable audio signal source for system verification, alignment and testing. The internal oscillator operates at 700 Hz allowing aural monitoring of the signal without the fatigue associated with oscillators running at a higher frequency such as 1000 Hz. The 700 Hz signal falls in the passband of an audio system and is easily distinguished from either 400 Hz or 1 kHz signals. The oscillator output is compared against an internal temperature-stable reference in a gain controlled loop that adjusts the final output. Two outputs are provided on the PT-ASG1. The XLR balanced output is front-panel switch selectable for MIC or LINE level. The line level is factory set to 4 dBu, but can be programmed to 6 dBu. When the front-panel level switch is set to MIC, the XLR output level is set to -46 dBu, 50 dB below 4.