Proof watches, quartz-proof, explosion-proof clock (manufacturers supply), BSZ2010 Quartz is a full-proof intrinsically safe explosion-proof bell, the explosion of refined quartz wall, the use of advanced technology, travel time is accurate and reliable, attractive appearance, easy to use, ideal timing tool. Suitable sites containing flammable gas mixtures, such as petroleum, chemical, oil depots, steel, coking, mining and other enterprises. The main technical parameters Explosion bell 1. Ambient temperature: -15 ~ + 50 ℃ (indoor) 2. Relative humidity: ≤85% 3. Atmospheric pressure: 80 ~ 110 kPa 4. proof mark: ExibⅡCT6 5. Operating voltage: DC1.25 ~ 1.70V (a 5 # battery) 6. Dimensions (mm): Square: 300 * 300 * 150 round: 340 * 340 * 60 proof quartz use 1. Install the battery: Open the battery compartment, according to the battery box instructions The "+" and "-" mark into the battery, second hand begins to run, said the explosion bell is working. 2. Dial for: the back of the movement along the setting wheel to toggle Standard Time. Notes 1. The quartz is intrinsically safe explosion-proof products, change in any component of the circuit are likely to affect the performance of explosion-proof quartz, so users do not require any disassembly of electronic components within the movement. 2. Explosion clock power supply circuit has a safety device, battery replacement will not affect its explosion-proof performance